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Best Choice ZYHA 
10Pcs Linear Motion Bearing, 8mm Bearing Steel Ball Bearing, LM8UU Engraving Machine for 3D Printer Best Value Obuyke 
12 Pcs Linear Ball Bearings Bearing Assortment Kit Linear Roller Bearing Spline Linear Ball Bearing Interior CNC Machine Linear roller bearing-- made of material with stable performance and .Jectse 
Linear Bearing, 8Pcs LM10UU Linear Ball Bearing with 10mm Bore Dia,19mm OD,29mm Length, Professional Linear Motion Shaft PARAMETERS: Item Type: Linear Bearing Set; Model: LM10UU; Inner Diameter: 10mm / 0.39 inch; Outer Diameter: 19mm / 0.75Ruilogod 
Ruilogod LM10UU Linear Roller Motion Bus Ball Bearing 10mm Inner Dia 2Pcs Product Name: Linear Bearing; Model: LM10UUNDNCZDHC 
20pcs V Groove Bearing, V623ZZ Carbon Steel Roller Bearing, Miniature Ball Bearings for Rail Track Linear Motion System There comes total 20 pieces bearings which you may use for many different projectsuxcell 
uxcell AXK2035 Thrust Needle Roller Bearings with Washers 20mm Bore 35mm OD 2mm Width 2pcs [MODLE] - Bearing Model: AXK2035 (I.D.=20mm, O.D.=35mm, Thickness=2mm); Washer Model: AS2035Ruilogod 
Ruilogod LM16UU Linear Roller Motion Bus Ball Bearing 37mm x 28mm x 16mm Product Name: Linear Ball Bearing; Model: LM16UU; Material: Metal,RubberCHILDWEET CHILDWEET 2pcs Linear Rail Bearing Blocks Sbr12 Open Slide Block for Smooth Linear Motion Aluminum Alloy Easy Install Ma Linear rail sliding block-- sliding bearing block features an open design for easy installation and maintenance.EMSea EMSea 2pcs Rowing Machine Seat Wheel Nylon Roller Wheel With Bearing 8x36x10mm POM Drawer Slide Roller Track Wheel with Features an M8 threaded shaft for easy and secure installation. With dimensions of 36mm outer diameter, and 10mm width,TenNuoDa Bearings Slide Bushing,SBR16UU Aluminum Open Linear Router Motion Bearing Solide Block 16mm Shaft Diameter Linear Roller 【Stable Precision】Aluminum slide block moves smoothly and does not skew, and has the characteristics of low wear, low noGLEAVI GLEAVI 12 Pcs Linear Ball Bearings Bearing Assortment Kit 3dprinter Roller Bearing Accessories for Linear Ball Bearing B 3d printer bearings-- it is commonly used in 3d printers and cnc machines.Ausmason 608RS Ball Bearings (8x22x7) 20 Pcs, 608-2RS Skateboard Bearings Rubber Sealed Deep Groove Ball Bearing for 3D Printer W 【Product Model】Deep groove ball bearings, Model: 608-2RS. (RS stands for single-sided seal. Although 608RS is printed onQWORK QWORK 20 Packs 608zz ball bearing, Longboard Roller Skate Bearing, for skateboards, scooters, inline skates, 8mm x 22mm Size: 608ZZ , ID=8mm, OD=22mm, Thickness=7mmiplusmile iplusmile 10pcs Mini Roller Ball Transfer Bearings, Carbon Steel Ball Transfer Bearing Casters Universal Base Roller Bal Crafted from firm carbon steel material, this roller ball transfer bearing is resistant to wear and has a long lifespan.Esforzarse Esforzarse 20 Pcs Longboard Roller Skate Bearing, Mini Ball Bearings, Deep Groove Ball Bearing for Skateboards, Furnitur ☀Package Includes: You will get skateboard bearings 20 pcs(Contains 10 colors, 4 for each color). can meet your daily neCOMOK COMOK Silver Tone 20mm Inner Diameter Aluminium Alloy Linear Ball Roller Bearing Sliding Block Product Name:Linear Bearing;Model:SCS20uuObuyke 4pcs Steel Bolt-Type Needle Roller Bearings Cam Follower for High Load Applications Automotive Construction and Agricult type track needle roller bearings: package includes: 4 x needle roller bearing.NDNCZDHC 2Pcs Linear Rail SBR12 700mm CNC Linear Guide Mini Linear Rail Guide Roller Bearings with 4Pcs SBR12UU Blocks Bearing fo Robust Metal Shell: The cnc linear guide features a metal shell that is durable and long-lasting, ensuring reliable perfObuyke 8 Pcs Roller Needle Bearings High Precision Bearing Pumply Bolt- Type Roller Bearing Needle Roller Bearing Roller Wheels Thread bearing roller bearing: the thick-walled outer ring enables high radial loads, while reducing distortion and bendTOPPERFUN TOPPERFUN Precision Engineered Linear Bearings Mm Open Linear Rail Block Roller Slides for CNC Machinery Easy to install: the simple design of this linear motion ball bearing slide block makes installation and adjustment straNDNCZDHC 10pcs Linear Motion Bearing, LM12UU 12mm Linear Bearing Linear Bearings Bearing Roller Bearing Bearings for 12mm Rod 3D If you have any questions, please contact us in time, we will be happy to solve the problem for you.Ruimou Ruimou 4Pcs SCS10UU Linear Motion Ball Bearing Slide Unit Bushing(10MM Inner Dia.) for CNC Machine Linear Sliding, 3D Pr 1.SCS10UU sliding unit bearings made of aluminum alloy，40* 35*26mm(10mm Inner Dia).eMagTech eMagTech RJ4JP-01-08 Drylin Linear Bearing 3D Printer Replacement LM8UU Bearing 8mm Inner Shaft 15mm Outer Diameter 24mm 8 mm inner diameter.uxcell uxcell CF6 Cam Follower KR16 Needle Roller Bearing, 16mm Roller Diameter, 11mm Roller Width, M6 Standard Stud 2pcs CF6 (KR16) (Roller Dia.: 16mm; Roller Width: 11mm; Stud Diameter: 6mm; Thread Size: M6x1.0mm)COMOK COMOK Silver Tone 25mm Inner Diameter Aluminium Alloy Linear Ball Roller Bearing Sliding Block Product Name:Linear Bearing;Model:SCS25uuRespicefinem Respicefinem Steel Lm40Uu 14. 0×14. 0×9. 0 2Pcs Linear Bearings Steel Low Noise High Cylinder Linear Bearings for Printe Linear Bearings Linear Motion Bearings Linear Bearings Linear Roller Bearings Cylinder Linear Bearings Cylinder Linear BMUSISALY MUSISALY 10pcs U Groove Nylon Roller Bearing Pulley Wheel for Sliding Windows and Doors Embedded Bearing Coating Versati Bearing pulley use: this pulley is suited for home tracks, making it versatile for various ,door hardware pulley,door puJectse 2Pcs SC20UU 20mm Closed Linear Bearing Slide Block, CNC Linear Motion Ball Bearing Slide Block for Silent, High-Speed an oxidation treatment, beautiful and corrosion .SOLUSTRE SOLUSTRE High Load Capacity Linear Roller Bearings Sbr20uu Carriage Slider Blocks Open Rail Userfriendly design: the simple design of this linear motion ball bearing slide block allows for quick and easy installauxcell uxcell AXK2035 Thrust Needle Roller Bearings with Washers 20mm Bore 35mm OD 2mm Width 10pcs [MODLE] - Bearing Model: AXK2035 (I.D.=20mm, O.D.=35mm, Thickness=2mm); Washer Model: AS2035GRIRIW GRIRIW 4pcs Bolted Roller Bearings High Precision Cam Bearings Steel Resistant for Linear HIGH PRECISION BEARING CAM FOLLOWER NEEDLE ROLLER BEARING BOLT- TYPE NEEDLE ROLLER BEARING BOLTED CAM BEARING CAM FOLLOWBaxnore Baxnore 2 PCS LM40UU Linear Ball Bearings, Bearing Steel Linear Motion Bearings, Low Noise Linear Roller Bearings for 3D Material: Made from bearing steel, this linear ball bearing undergoes special heat treatment, enhancing its service lifeiplusmile iplusmile 2sets Linear Guide Axis Wheel Bearing Linear Rail Ball Bearing Bearings Pillow Block Bearing Linear Slide Rail Ball bearing bushing--linear bearing is a linear , used in conjunction with a cylindrical shaft with an infinite stroke,VGOL VGOL 4PCS LM8LUU Linear Bearing 3D Printer Extra Longer Double Sealed Ball Bearings for 3D Printer Engraving Machine 8mm Application: These are ideal for small 8mm axle/hobby bar projects, such as 3D printer, engraving machine and many otherULTECHNOVO ULTECHNOVO Roller Needle Bearing Set 4pcs Bolted Cam Bearings High Rigidity Heat Resistant for Linear Motion Steel cam follower bolt- type needle roller bearing thread bearing roller bearing cam follower bearing cam follower boltULTECHNOVO ULTECHNOVO Sets Heavy Duty Printer Wheel Pulley Wheels Small Bearings for d Printer Passive Round Roller Linear Bearing Passive wheel-- they are for working with the 3d printer, easy to install, very convenient.KICHOUSE KICHOUSE High Load Capacity Linear Roller Bearing Slide Block Sbr20uu Open Type 20mm Rail for Industrial Use Effortless setup: the straightforward design of this linear motion ball bearing slide block ensures easy installation anSagaSave SG 622 Deep Nut Ball Bearing 6 mm x 22 mm x 11 mm Carbon Steel Guide Roller Bearing with Screw for Rail Track Linear Sys Smooth, low friction, high performance and long service life.iplusmile iplusmile 4pcs Metal Pulley Wheel 3D Printer Roller Wheel 625zz Bearings for High Precision Printing Linear bearing:outstanding workmanship, reasonable design, stable and practical, will bring you a using experience,Passiiplusmile iplusmile High Capacity Linear Roller Bearing Slide Block Sbr20uu 20mm Shaft Ball Slide Block for Industrial Application Broad compatibility: suitable for a wide range of equipment, including automation systems, cnc machines, this linear guiuxcell uxcell 2 Pcs 8mm x 600mm Linear Motion Rail Shaft Slide Guide with 4 Pcs SCS8UU Bearings and 4 Pcs SK8 Rail Support Line Specification: Rail Guide Total Size: 8mm x 600mm; SK8 Rail Support Size: 33 x 42 x 15 mm/1.3 x 1.7 x 0.6 inch (L*W*H);HFZCSIMR HFZCSIMR 2Pcs LV20/8ZZ LV20/8 V Groove Track Roller Bearing Smooth moving,low friction,high performance and long life Wi We can supply any type of bearings, you can leave us a message.Zopsc 8mm X 400mm Linear Motion Guide Rail Shaft CNC Linear Rail Shaft Rod with Bearing Guide Support + SC8UU Bearing Block Se brand new and high quality.NFGZFNMKYW NFGZFNMKYW 2Pcs LV20/8ZZ LV20/8 V Groove Track Roller Bearing Smooth moving,low friction,high performance and long life Good wear resistance, good axial and radial support performance, durable choice for high speed rotation.CBCKZTETUP CBCKZTETUP 2pcs SBR16 Linear Rail Guide 200 300 400 500 600 1000 1200 1500mm Fully Slide Support +4pcs SBR16UU Linear Be Made of high-quality materials, with high precision, stable operation, and long service lifeCNCYEAH CNCYEAH SBR16UU Slide Block 1PC 16mm Square Type Carriage Bearing Blocks Linear Bearing Motion Ball Slide Units for 16mm PACKAGE INCLUDED: 1PC SBR16UU Slide BlockGatuida Gatuida Linear Rail Guide Carriage Block Low Friction 3D Printer Accessory for Mgn12h Replacement Part Sliding block--replacement carriage block for sliding rail,3d printer AccessoryCELECH 30pcs 608-2RS Ball Bearings(8x22x7),Metal Double Shielded Miniature Deep Groove Skateboard Ball Bearings for 3D Printer Package includes: Set of 30pcs 608-2RS Ball Bearings.JIRONN 20 PCS Longboard Integrated Bearing 608-ZZ,Skateboard Wheel Bearing Inline Roller Skate Ball Bearing, Deep Carbon Steel 【Application】 608 ball bearing used in skateboard, roller skates, wheel bearings, Skateboard Bearing.EMSea EMSea 4 Sets Needle Roller Bearing AXK2035 Pressure-resistant Thrust Roller AS2035 Planar Bearing Needle Roller Thrust B Bearing Model: AXK2035 (I.D.=20mm, O.D.=35mm, Thickness=2mm); Washer Model: AS2035Ruimou Ruimou 12Pcs LM10UU Solid Polymer Bearing 10MM Linear Bearings（10X19X29MM） for Machine Sliding, 3D Printer Replace Parts 1.LM10UU bearings made of solid polymer，10mm(Inner Dia.)* 19mm(Outer Dia.)*29mm(Thickness).BROLEO 400 / 500mm Linear Rail, MGN7H Linear Guide Rail with 2 Carriage Bearing Block for 3D Printer and CNC Machine, Lathes Mi Compact and Lightweight Design: The MGN7H linear guide rail with 2 sliding blocks is compact and lightweight, making itHEALLILY HEALLILY 4pcs Steel Thrust Ball Bearings Precision Axial Bearings for Enhanced Stability and Efficient Applications Versatile use: suitable variety of applications, including turntables, ovens, and scooters, these bearings offer versatiCerlyiont 12 Pcs Aluminum Alloy Slide Block, Linear Motion Bearing Slide Block, Box Type CNC Slide Unit Bushing for SCS8UU Roller, 【STABLE AND PERFORMANCE】: Built-in high-quality bearing materials ensure stable sliding performance. Engineered for precLxcshLjx LxcshLjx 20Pcs Skateboard Rolling Bearings, Miniature Deep Groove Rollerblade Bearings, Bearing Steel Rubber Sealed Skat Material : The bearings is made of high quality bearing steel, it has durability and resistance to rust and deformationVILLFUL VILLFUL Metal Small Bearings Small Pulley Guide Rollers for 3D Printing Parts Wheel Linear Bearing Pulley Set Passive round pulley-- these 3d printer wheels move smoothly, have low noise, and print with high accuracy, which can imNZBZHHZGPL NZBZHHZGPL 10Pcs V624ZZ V Groove Ball Bearing Pulley for Rail Track Linear Motion System 4X13X6mm Roller Wheel Ball Bear Made of high-quality materials, with high rotational speed, low friction, sturdy and durable, and long service lifeBGBLKLGPPN BGBLKLGPPN 10Pcs V624ZZ V Groove Ball Bearing Pulley for Rail Track Linear Motion System 4X13X6mm Roller Wheel Ball Bear Made of high-quality materials, durableNZBZHHZGPL NZBZHHZGPL 10Pcs V624ZZ V Groove Ball Bearing Pulley for Rail Track Linear Motion System 4X13X6mm Roller Wheel Ball Bear Made of high-quality materials, with high rotational speed, low friction, sturdy and durable, and long service lifeNDNCZDHC NDNCZDHC Cross Roller Bearing Linear Stage 0.01mm Centimeter Card Accuracy X Axis Precision Stage 25×25mm Manual Linear Material: This Cross Roller Bearing Linear Stage is newly produced with excellent quality. It's made from aluminium alloNPKNGZTATW NPKNGZTATW 10Pcs V624ZZ V Groove Ball Bearing Pulley for Rail Track Linear Motion System 4X13X6mm Roller Wheel Ball Bear Easy to assemble and exchange, and can replace slides or tracks.uxcell uxcell Needle Roller Bearings, 30mm Bore 37mm OD 20mm Width, Chrome Steel Needles Steel Cage One Way Clutch Bearing [SIZE] - Inner Diameter = 30mm, Outer Diameter = 37mm, Width = 20mmNPKNGZTATW NPKNGZTATW 10Pcs V624ZZ V Groove Ball Bearing Pulley for Rail Track Linear Motion System 4X13X6mm Roller Wheel Ball Bear Easy to assemble and exchange, and can replace slides or tracks.Diitao Diitao 3D Printer POM Wheel Plastic Pulley Linear Bearing Black Passive Round Wheel Roller for Creality Ender 3, Ender 3 POM Bearing Pulley --- The pulley is made of POM imported material, which runs smoothly, is durable, has good wear resisBIENKA BIENKA ZAxis Linear Stage Linear Roller Bearings Thin High Accuracy Manual Platform Sliding Table for Testing Machines, Main body of great aluminum alloy material possess light weight, very convenientRuimou Ruimou 12Pcs LM8UU Solid Polymer Bearing 8MM Linear Bearings（8X16X25MM） for Mendel 3D Printer Replace Parts 1.LM8UU bearings made of solid polymer，8mm(Inner Dia.)* 16mm(Outer Dia.)*25mm(Thickness).BGBLKLGPPN BGBLKLGPPN RM2ZZ RM2-2RS RM2 W2 V Groove Track Roller Bearing 9.525x30.73x11.1mm Bearings(SSW2-2RS) Made of high-quality materials, durableXTevu 2Pcs 300mm12mm SBR12UU Linear Slide Rail Shaft 4Pcs Bearing Slide Block Linear Bearing Inside Linear Motion Roller Beari The linear slide rail shaft is made of high quality carbon steel, and the bearing block is made of aluminum alloy, sturdBognajin 12Pcs Aluminum Alloy Linear Motion Bearing Slide Block Box Type CNC Slide Unit Bushing Compatible with SCS8UU Roller, St MATERIAL: Made of high-quality aluminum alloy, our slide blocks are lightweight, strong, and to , ensuring durability anTeCnr TeCnr 20PCS Rolling Bearings 608-RS(8x22x7), Rubber Sealed Micro deep Groove Skateboard Ball Bearings, 608-2RS Skateboar 【Bearing size】608RS bearing inner diameter 8mm, outer diameter 22mm, thickness 7mm. Twenty of them.Febuliy Linear Motion 错误 Slide Block Aluminum Alloy Roller Box Type CNC Slide Unit Bushing [SMOOTH MOVEMENT] Linear motion 错误 slide block provides smooth movement with low friction and high rigidity, 错误 a long sDpofirs Linear Guide Rail, Sliding Rail Good Stability GCr15 C45 Carbon Steel with 4Pcs Slide Block for Equipment (10‑500) Easy Installation: The steel supports make installation quick and easy, saving time and effort for machinery setup.KUNLONGSKY 36 Pieces -15A Ball Transfers Universal Rotation Ball Conveyor Wheel Caster Roller 5/8 Inch Applications: these ball transfers can provide adequate non-linear support for warehouse carton rolling platform, rollerEMSea EMSea 20x U624ZZ U Groove Ball Bearings 4x13x7mm High Carbon Steel Miniature Guide Pulley Rail Wheel with Double Shielde Bearings have 1.5mm deep U groove that generally ride on a rail or track, 4mm/0.15inch inner diameter, 13mm/0.51inch outCHILDWEET CHILDWEET 3D Printer Roller Wheel Set 16pcs Passive Wheels Pom Steel Bearings Silent Low Friction Design Passive wheel:it is plastic 3d printer wheels with precision steel bearings for 3d printing,roller wheel for 3d printerNDNCZDHC NDNCZDHC Manual Linear Positioning Stage SEMX40 AS Cross Roller Bearing Linear Stage 40×40mm Xaxis Precision Quality: The manual linear positioning stage is newly developed with good quality. It meets high - standard manufacturinuxcell uxcell SCS16UU Linear Ball Bearing Slide Block Units, 16mm Bore Dia(Pack of 4) Model: SCS16UU (Bearing No.: LM16UU, Nominal Shaft Diamter (dr): 16mm)ZLXHDL U22 U Shaped Round Bottom Track Groove Pulley Bearing Sliding Rollers Bearing for Window and Door Linear Motion Systems This track rollers bearing U-Groove bearings is mostly used in industrial automation equipment and photographic equipmenAuoeer Fine Tuning Sliding Table - Linear Cross Roller Bearing RS60-L Manual Trimming Station Displacement Platform Linear Stag ★ High precision, smooth movement, suitable to be built in other devicesuxcell uxcell 2 Pcs 8mm x 1000mm Linear Motion Rail Shaft Slide Guide with 4 Pcs SCS8UU Bearings and 4 Pcs SK8 Rail Support Lin Specification: Rail Guide Total Size: 8mm x 1000mm; SK8 Rail Support Size: 33 x 42 x 15 mm/1.3 x 1.7 x 0.6 inch (L*W*H);HUANGYUZHENZHI Linear Rail SBR10UU SBR12UU SBR16UU SBR20UU SBR25UU SBR30UU SBR35UU SBR40UU Linear Ball Bearing Block Open Type CNC Rout Aluminum profile extrusion products are a good linear motion material with high strength and adjustable.OKUMEYR OKUMEYR D Printer Accessories Pcs Roller Wheel Passive Round Precision Steel Bearings Easy to Install for d Printing Roller wheels:the performance is better than the iron bearing wheel, our developed 3d printed wheels have rubber bearingKUNLONGSKY 5/8inch Roller Transfer Bearing,80PCS -15H Carbon Steel Bearing Rollers, Transfer Bearing Casters Universal Size - The size of the roller wheels diameter is about 5/8 inch, roller transfer bearings boast a universal siANKROYU ANKROYU Z Axis Linear Stage, Thin Aluminum Alloy Manual Linear Stage, Dovetail Aluminum Alloy Feed Screw Linear Roller B 【Convenient】The main body of this Z axis linear stage is made of high-quality aluminum alloy material, resulting in a liHUANGYUZHENZHI Linear Rail 2Pcs SBR16 Linear Rail Guide 300 400 500 600 1000 1200 1500mm + 4pcs SBR16UU Linear Bearing Block Linear Rai Aluminum profile extrusion products are a good linear motion material with high strength and adjustable.NDNCZDHC NDNCZDHC Linear Bearing Slide Block High Accurate Linear Motion Bearing Slide Unit with Open Bearing for Linear Rail (SB Premium Metal Shell: The shell is constructed from premium metal, ensuring longevity and robustness.HUIDYSM HUIDYSM 10Pcs 3CM Dia Carbon Steel -15A Ball Transfer Unit Ball Bearing Conveyor Roller Ball Transmission Tool,silver Smooth Operation: 10 precision-engineered carbon steel ball bearings ensure a smooth and efficient rolling motion, perfeRespicefinem Respicefinem Cross Axis X Linear Stage Micrometer Manual Fine Tuning Cross Roller Precision Linear Stages 25X25mm Cross Precision Machining for Unmatched Stability: Engineered with rigorous precision, the SEMX25-AS x linear stage offers a sQANYEGN QANYEGN Linear Stage Micrometer, Manual Fine Tuning Cross Roller Linear Stages, Displacement Trimming Bearing Sliding Ta PREMIUM QUALITY CONSTRUCTION: The Linear Stage Micrometer is constructed from aluminum alloy material, ensuring durabiliXiKe XIKE 6200-2RS Ball Bearings 10x30x9mm, Bearing Steel｜Pre-Lubricated｜Double Rubber Seals｜6200RS Deep Groove Ball Bearing ✔ Dimensions: Bore diameter 10 mm, Outside diameter 30 mm, Width 9 mm.Tomeco SGR35-4 Four roller skating block,Linear slide block bearings,Sliding Bearings CNC parts,Without linear roller guide" Type: SlideRUAION 6pcs SBR35UU Linear Motion Ball Bearing Slide Unit Bushing Linear Roller Bearing 6pcs SBR35UU Linear Motion Ball Bearing Slide Unit Bushing Linear Roller BearingMUNEFE Tuning Sliding Table, Manual Displacement Platform, Linear Roller Bearings, Suitable for Device Settings and Adjustments ALUMINUM ALLOY STRUCTURE: This platform is made of high quality aluminum alloy with a black anodized surface to ensure iRuimou Ruimou 2Pcs SBR20UU Open Linear Motion Ball Bearing Slide Unit Bushing(20MM Inner Dia.) for CNC Machine Sliding, 3D Prin 1.FEATURES:SBR20UU Open sliding unit bearings made of aluminum alloy，44*50*38mm(20mm Inner Dia).HUANGYUZHENZHI Linear Rail 2Pcs SBR16 Linear Rail Guide 300 400 500 600 1000 1200 1500mm + 4pcs SBR16UU Linear Bearing Block Linear Rai Aluminum profile extrusion products are a good linear motion material with high strength and adjustable.uxcell uxcell 6-Pack Nylon Garage Door Rollers, 1.8"/ 46mm Quiet Garage Door Wheels 6.6"/ 167mm Stem, High Load 6200zz 8 Balls [Multipurpose Use] - Nylon garage roller replacements are designed for various doors and are widely used in residentialuxcell uxcell 10-Pack Nylon Garage Door Rollers, 1.8"/ 46mm Quiet Garage Door Wheels 4.3"/ 108mm Stem, High Load 6200zz 8 Balls [Multipurpose Use] - Nylon garage roller replacements are designed for various doors and are widely used in residentialRuimou Ruimou 2Pcs SBR12UU Open Linear Motion Ball Bearing Slide Unit Bushing(12MM Inner Dia.) for CNC Machine Sliding, 3D Prin 1.FEATURES:SBR12UU Open sliding unit bearings made of aluminum alloy，40* 39*27.5mm(12mm Inner Dia).Gearwell Z SEMZL60AS Micrometer Manual Slide Table Cross Roller Bearing Vertical Linear Stage 6060mm Trimming Platform Linear Sta [BRAND NEW AND HIGH-QUALITY] brand new and high quality, ensuring durability and longevity.HUANGYUZHENZHI Linear Rail 2PCS SBR12 SBR16 SBR20 20mm Linear Guide Rail 300-1500mm Fully Supported Linear Rail with SBR16UU Linear Bea Aluminum profile extrusion products are a good linear motion material with high strength and adjustable.