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Best Choice uxcell 
uxcell Aluminum MXL 20 Teeth 5mm Bore Timing Belt Idler Pulley Flange Synchronous Wheel 6mm Belt for 3D Printer CNC Material: Aluminum; Durable and virtually.uxcell 
uxcell Aluminum 20 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel Silver Tone for 3D Printer Material: Aluminum; Durable and virtually.
A● 28XL037 Aluminum Timing Belt Pulley 28T 6mm Bore 2 Flanges Fit Belt Max. Width 11mm/0.43". Designed with double flange, is suitable for 0.43" wide belt.Best Value Ruilogod 
Ruilogod 12.5mm Bore Double Flange 10 Teeth Timing Belt Pulleys Product name: timing pulley; model No.: XL10T; Tooth Quatity: 10
24XL037 Aluminum Timing Belt Pulley 24T 6mm Bore Dual Flanges specifications: Description: Used widely in milling machine, CNC engine lathe, gear shaper, hobbing machine, drilling maRuilogod 
Ruilogod 5.2mm 13/16" Drill Hole Double Flange 20 Timing Belt Pulley Product Name : Timing Pulley;Model NO. : XL20T;Tooth Quatity : 20uxcell 
uxcell Aluminum MXL 20 Teeth 8mm Bore Timing Belt Idler Pulley Flange Synchronous Wheel 6mm Belt for 3D Printer CNC Material: Aluminum; Durable and virtually.Flange Pulley Timing Valve Adjuster Flanges Ducati Monster 1200 14-21 Flagia Puleggia Distribution Valve Adjuster Flange Ducati Monster 1200 14-21 Ducati Monster 1200 14 21 Multistrada 1200LC LICTOP LICTOP GT2 40 Teeth 10mm Bore Timing Belt Pulley Flange Synchronous Wheel Durable and virtuallyFlange Pulley Timing Belt Pulley Flanges Piaggio Porter 1000 Flag of Pulley Flange Flange Plaggio Porter 1000 Distribution. - -.Ruilogod Ruilogod 32mm outside dia 11mm belt width 2 flanges 15 teeth timing pulley Product name: timing pulley; Material: aluminum; color: silver toneRuilogod Ruilogod 10mm Drill Hole 40 Double Flange Timing Belt Pulley Product Name : Timing Pulley;Material : Metal;Color : Silver Tone26XL037 Aluminum Timing Belt Pulley 26 Tooth, 0.25 Bore, 2 Flanges, 2 Set Screws Type 6F (with Hub and 2 Flanges). Polytech Design Inc. Tooth Style (XL) 1/5 pitch. Bore Type Finished Bore. Flange Dia (uxcell uxcell Aluminum XL 30 Teeth 6.35mm Bore Timing Belt Idler Pulley Flange Synchronous Wheel for 10mm Belt 3D Printer CNC Material: Aluminum Alloy; Durable and virtually.58XL037 Aluminum Timing Belt Pulley 58 Tooth, 3/8 Bore, 2 Flanges, 2 Set Screws Type 6F (with Hub and 2 Flanges) Hub O.D. 1.77". Polytech Design Inc. Tooth Style (XL) 1/5 pitch. Bore Type Finished Boruxcell uxcell Timing Pulley 20&40 Teeth 5mm Bore Synchronous Wheel with Belt and Wrench for 3D Printer, CNC Machine, 1 Set The synchronous wheel is made of aluminum alloy with a high finish. Used in conjunction with timing belts, realize synch47XL037 Aluminum Timing Belt Pulley 47 Tooth, 3/8 Bore, 2 Flanges, 2 Set Screws Type 6F (with Hub and 2 Flanges). Polytehc Design Inc. Tooth Style (XL) 1/5 pitch. Bore Type Finished Bore. Flange O. DiAexit Aexit 3D (Electrical equipment) Printer Aluminum GT2 20 Teeth 6.35mm drills holes Timing Pulley Flange Synchronous Wheel Material: Aluminum; Durable and virtually.10XL037 STEEL Timing Belt Pulley 10 Tooth 3/16" Bore, 2 Flanges 2 Set Screws USA Type 6F (with Hub and 2 Flanges). Polytehc Design Inc. Tooth Style (XL) 1/5" pitch. Bore Type Finished Bore. Flange DiaRuilogod Ruilogod Double Flange 16 Tooth 3/8" Pitch L Timing Belt Pulley Silver Tone Product name: timing pulley; model: l; Material: metalSterling Instrument 35XL037 Timing Pulley 35 Tooth, 5/16 Bore, 2 Flanges Type (2 Flanges). Bore Type Finished Bore. Pulley Belt Width (in) 7/16. Tooth Style (XL) 1/5 pitch. Bore (in) 0.312 5/16Ruilogod Ruilogod Double Flange 15 Tooth 3/8" Pitch L Timing Belt Pulley Silver Tone Product Name : Timing Pulley;Model : L;Material : Metal60XL037 Aluminum Timing Belt Pulley 60 Tooth 2 Flanges 3/8 Bore, 2 Set Screws Flange O. Dia (in) 2 Flanges. Polytech Design Inc. Tooth Style (XL) 1/5 pitch. Bore Type Finished Bore. Pulley Belt Widtuxcell uxcell Aluminum XL 40 Teeth 7mm Bore Timing Belt Idler Pulley Flange Synchronous Wheel for 10mm Belt CNC Material: Aluminum Alloy; Durable and virtually.10XL037 Aluminum Timing Belt Pulley 10 Tooth, 0.25 Bore, 2 Flanges 2 Set Screws Type 6F (with Hub and 2 Flanges). Polytech Design Inc. Tooth Style (XL) 1/5" pitch. Bore Type Finished Bore. Flange Diauxcell uxcell 20 Teeth 3mm Bore Timing Pulley, Aluminium Synchronous Wheel Silver for 3D Printer Belt, CNC Machine, Pack of 2 The synchronous wheel is made of aluminum alloy with a high finish. Used in conjunction with timing belts, realize synch38XL037 Aluminum Timing Belt Pulley 38 Tooth, 3/8 Bore, 2 Flanges, 2 Set Screws Type 6F (with Hub and 2 Flanges). Polytech Design Inc. Tooth Style (XL) 1/5 pitch. Bore Type Finished Bore. Flange Dia (15% Off Lokkr Lokkr 2PCS 8mm Bore 20&60 2GT Synchronous Wheel Set Teeth Aluminum Timing Pulley + Closed Loop Rubber Length 200mm Width ➤High Quality Material: Made of high-quality Aluminum Alloy, Surface oxidation treatment, durable, fine workmanship and28XL037 Aluminum Timing Belt Pulley 28 Tooth, 0.25 Bore, 2 Flanges, 2 Set Screws Type 6F (with Hub and 2 Flanges). Polytech Design Inc. Tooth Style (XL) 1/5 pitch. Bore Type Finished Bore. Flange Dia (cizihuu Cizihuu 1PCS 20T 5M Timing Pulley, 20mm Belt Width, 12mm Bore, Double Flange Usage 1:For CNC machine Synchronous Belt PulleyFlange Pulley Timing Belt Pulley Flanges Piaggio Porter Pick Up Flange pulley belt distribution Pulley flange piaggio Porter Pick Up Piaggio Porter Pick Up 1300 16v 98-08 -.Fafeicy Fafeicy Aluminum GT2 Timing GT2 Timing Pulleys, 3D Printer Pulley Belt 60 Tooth 5mm Bore Belt Flange Synchronous Wheel f Its pitch is short, a more uniformTiming Belt Pulley 22 Teeth, 0.25 Bore, 2 Flanges, 2 Set Screws GATES PB22XL037 Part #: PB22XL037. Bore Type: Finished Bore. Axle Bore (In): 1/4. Pitch (In): 1/5. The item may have been part of a largTnfeeon Synchronous Wheel, Aluminum Timing Pulley Reinforced Rubber 200mm Belt for 3D Printers, CNC Lathes (8mm / 0.31in Bore) [EXCELLENT ALUMINUM ALLOY MATERIAL] Crafted from premium aluminum alloy with surface oxidation treatment, ensuring durabuxcell uxcell Aluminum XL 40 Teeth 19mm Bore Timing Belt Idler Pulley Flange Synchronous Wheel for 10mm Belt CNC Material: Aluminum Alloy; Durable and virtually.Lokkr Lokkr 6PCS Aluminum 20 Teeth GT2 Timing Belt Pulley 5mm Bore 6mm Width, Synchronous Wheel for 3D Printer Parts Width 6mm ➤High Quality Material: Made of high-quality Aluminum Alloy, Surface oxidation treatment, durable, fine workmanship andLokkr Lokkr 6PCS Aluminum 20 Teeth GT2 Timing Belt Pulley 5mm Bore 6mm Width, Synchronous Wheel for 3D Printer Parts Width 6mm ➤High Quality Material: Made of high-quality Aluminum Alloy, Surface oxidation treatment, durable, fine workmanship anduxcell uxcell Aluminum XL 40 Teeth 15mm Bore Timing Belt Idler Pulley Flange Synchronous Wheel for 10mm Belt CNC Material: Aluminum Alloy; Durable and virtually.uxcell uxcell a11092600ux0030 24XL037 Aluminum Timing Pulley 24T 6mm Bore Dual Flanges, 0.24 Metal Product Name : Timing Pulley;UseWith : XL037 Belts;Material : MetalRuilogod Ruilogod Synchronous 20mm Wide Groove Belt 15 Timing Pulley Silver Tone Weight : 134g;Package Content : 1 x Timing PulleyQauffty Qauffty 5X Aluminum 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Material: Aluminum; and virtually.Lrocaoai Aluminum 16 Teeth 6mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Suits to the timing belt which is 6mm width.GWVASOEYV Timing Pulley 40 Teeth GT2 Timing Pulley, Bore 5/6/6.35/8/10mm, for Width 6/9/15mm GT2 Timing Belt, Small Backlash 2GT B Type: 40-2GT-6 BF / 40-2GT-9 BFXolngYYeng GT2 40 Teeth 10mm Bore Timing Belt Pulley Flange Synchronous Wheel Durable and virtuallyuxcell uxcell Aluminum 3 M 20T 5mm Bore Toothless Timing Idler Belt Pulley Flange Synchronous Wheel for 10mm Timing Belt Material: Aluminum Alloy; Durable and virtually.Byttlerom Byttlerom Aluminum 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Material: Aluminum; and virtually.Aexit Aexit Aluminum (Electrical equipment) GT2 16 Teeth 5mm drills holes Timing Belt Pulley Flange Synchronous Wheel for (44r Material: Aluminum; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) GT2 20 Teeth 8mm drills holes Timing Belt Pulley Flange Synchronous Wheel for (99r Material: Aluminum; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) GT5 20 Teeth 6.35mm drills holes Timing Belt Pulley Flange Synchronous Wheel for ( Material: Aluminum; Durable and virtually.Aswalling Aswalling Aluminum 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Teeth: 36T; Bore: 8mm; Total Size: 25.5*25.5*17mm(L*W*H)Lrocaoai Aluminum 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Suits to the timing belt which is 6mm width.Peakloong Peakloong Aluminum 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Teeth: 36T; Bore: 8mm; Total Size: 25.5*25.5*17mm(L*W*H)Carhar Carhar Aluminum 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous for 3D Printer Suits to the timing belt which is 6mm width.KUNLONGSKY 3X Aluminum 16 Teeth 6mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer and virtually.xelea xelea Aluminum 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Teeth: 36T; Bore: 8mm; Total Size: 25.5*25.5*17mm(L*W*H)EMSea EMSea 4Pcs GT2 Smooth Idler Pulley 20 Teeth 5mm Bore 10mm Width Synchronous Belt Wheels with Double Bearings for 3D Prin GT2 toothless idler pulley, 20 teeth, 5mm bore, 10mm wide.Mellisso Mellisso 2X Aluminum 16 Teeth 6mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer 16 contact with the tooth side which minimizes the risk of the belt slipping.Lokkr Lokkr 6PCS Aluminum 20 Teeth GT2 Timing Belt Pulley 8mm Bore 6mm Width, Synchronous Wheel for 3D Printer Parts Width 6mm ➤High Quality Material: Made of high-quality Aluminum Alloy, Surface oxidation treatment, durable, fine workmanship andLokkr Lokkr 6PCS Aluminum 20 Teeth GT2 Timing Belt Pulley 8mm Bore 6mm Width, Synchronous Wheel for 3D Printer Parts Width 6mm ➤High Quality Material: Made of high-quality Aluminum Alloy, Surface oxidation treatment, durable, fine workmanship andPeakloong Peakloong Aluminum 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Material: Aluminum; and virtually.Aexit Aexit Aluminum (Electrical equipment) GT2 16T 3mm drills holes Timing Belt Idler Pulley Flange with Ball Bearings for (7 Material: Aluminum; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) GT2 3mm drills holes Toothless Timing Belt Idler Pulley Flange with Ball Bearings Material: Aluminum; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) GT2 5mm drills holes Toothless Timing Belt Idler Pulley Flange with Ball Bearings Material: Aluminum; Net Weight: 3gAexit Aexit Aluminum (Electrical equipment) GT2 40 Teeth 6.35mm drills holes Timing Belt Pulley Flange Synchronous Wheel for ( Material: Aluminum; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) GT2 30 Teeth 8mm drills holes Timing Belt Pulley Flange Synchronous Wheel for (79r Material: Aluminum; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) 3 M 20T 5mm drills holes Toothless Timing Idler Belt Pulley Flange Synchronous Whe Material: Aluminum Alloy; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) GT2 20T 5mm drills holes Timing Belt Idler Pulley Flange with Dual Ball Bearings f Material: Aluminum; Net Weight: 4gAexit Aexit Aluminum (Electrical equipment) 3 M 20T 4mm drills holes Toothless Timing Idler Belt Pulley Flange Synchronous Whe Material: Aluminum Alloy; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) GT2 18 Teeth drills holes 5mm Timing Belt Pulley Flange Synchronous Wheel for (86r Material: Aluminum; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) GT2 40 Teeth 8mm drills holes Timing Belt Pulley Flange Synchronous Wheel for (77r Material: Aluminum; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) 3 M 20T 3mm drills holes Toothless Timing Idler Belt Pulley Flange Synchronous Whe Material: Aluminum Alloy; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) GT2 36 Teeth 8mm drills holes Timing Belt Pulley Flange Synchronous Wheel for (89r Material: Aluminum; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) GT2 40 Teeth 5mm drills holes Timing Belt Pulley Flange Synchronous Wheel for (58r Material: Aluminum; Durable and virtually.Rengu GT2 Synchronous Wheel, Elastic Aluminum Alloy Timing Pulley Energy Saving 2 Set High Transmission Accuray for Milling Ma ACCURATE AND FIRM: Providing accurate transmission. No slippage during work, constant transmission ratioAexit Aexit Aluminum (Electrical equipment) 3 M 20T 6mm drills holes Toothless Timing Idler Belt Pulley Flange Synchronous Whe Material: Aluminum Alloy; Durable and virtually.NDNCZDHC GT2 Synchronous Wheel 80 Teeth 5mm Bore Alloy Steel Timing Belt Pulley Dual Flange GT2 Pulley Fit 6mm Width Timing Belt Easy to Install: Compact in size and light weight as well, the installation can be quickly finished with hex wrench andAexit Aexit Aluminum (Electrical equipment) 3 M 20T 6mm drills holes Toothless Timing Idler Belt Pulley Flange Synchronous Whe Material: Aluminum Alloy; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) 3 M 20T 3mm drills holes Toothless Timing Idler Belt Pulley Flange Synchronous Whe Material: Aluminum Alloy; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) 3 M 20T 5mm drills holes Toothless Timing Idler Belt Pulley Flange Synchronous Whe Material: Aluminum Alloy; Durable and virtually.LIXIAOTONG Double Flange XL Type 1/5" Pitch 36 Tooth Groove Belt Timing Pulley Double Flange XL Type 1/5" Pitch 36 Tooth Groove Belt Timing PulleyKUNLONGSKY 3X Aluminum 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Material: Aluminum; and virtually.AcbbMNS AcbbMNS 5Pcs GT2 Timing Belt Idler Pulley 20 Teeth 8mm Bore Aluminium Alloy Synchronous Wheels for 10mm Width Belt 3D Pr ►Product Size: 20 teeth, 8mm boreMellisso Mellisso 2X Aluminum 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Material: Aluminum; and virtually.ATNSINC ATNSINC 21PCS/Set GT2 Timing Belt Pulley Include 8pcs Mix Timing Belt 6 mm Width, 8pcs 20 Teeth 6mm Bore Belt Pulley Whe Package included: 8pcs GT2 close-loop belt in different size:110mm/ 112mm/122mm/158mm/200mm/280mm/300mm/400mm, 8 pcs GT2Toyota Toyota Genuine Parts Camshaft Timing Pulley Flange No. 2 Part Number 13586-17010 Compatible Models for Reference *Please check with the manufacturer before purchasing. May not fit by grade depending onANQUORA ANQUORA GT2 Timing Belt 6mm Width 5m + 4 pcs 20 Teeth 5mm Bore Timing Belt Pulley + 4pcs Idler Pulley + 4pcs Tensioner T GT2 Timing Belt [1pcs 6mm*5m]: made of premium rubber, providing excellent tensile strength and wear resistance. The belMellisso Mellisso 4X Aluminum 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Suits to the timing belt which is 6mm width.Aexit Aexit Aluminum (Electrical equipment) GT2 60 Teeth 8mm drills holes Timing Belt Pulley Flange Synchronous Wheel for (39r Material: Aluminum; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) GT2 60 Teeth 5mm drills holes Timing Belt Pulley Flange Synchronous Wheel for (59r Material: Aluminum; Durable and virtually.XYZOOM XYWHPGV Stepper Motor Double Flange 30 Teeth XL037 Belt Timing Pulley(29165 33993 58cbd da8f8 ab203 6c696 Mellisso Mellisso 5X Aluminum 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Suits to the timing belt which is 6mm width.TOYOTA (Toyota) genuine parts cam shaft timing pulley flange NO.1 part number 13585-67010 Compatible Models for Reference *Please check with the manufacturer before purchasing. May not fit by grade depending onTOYOTA (Toyota) genuine parts cam shaft timing pulley flange NO.2 part number 13586-17020 Compatible Models for Reference *Please check with the manufacturer before purchasing. May not fit by grade depending onToyota Toyota Genuine Parts Camshaft Timing Pulley Flange No. 1 Coaster, Land Cruiser Part Number 13585-17020 Compatible Models for Reference *Please check with the manufacturer before purchasing. May not fit by grade depending onAexit Aexit Aluminum (Electrical equipment) XL 40 Teeth 6.35mm drills holes Timing Belt Idler Pulley Flange Synchronous Wheel Material: Aluminum Alloy; Durable and virtually.VENEKA VENEKA 3X Aluminum GT2 36 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 3D Printer Zeelo Zeelo GT2 Timing Belt Pulley, 8pcs 5mm 20 Teeth Timing Pulley Wheel and GT2 5 Meters Rubber 2mm Pitch 6mm Wide Timing Be Aexit Aexit Aluminum (Electrical equipment) XL 40 Teeth 12.7mm drills holes Timing Belt Idler Pulley Flange Synchronous Wheel Material: Aluminum Alloy; Durable and virtually.AcbbMNS AcbbMNS 5Pcs GT2 Timing Belt Idler Pulley 16 Teeth 5mm Bore Aluminium Alloy Synchronous Wheels for 6mm Width Belt 3D Pri ►Product Size: 16 teeth, 5mm boreAexit Aexit Aluminum (Electrical equipment) XL 40 Teeth 6mm drills holes Timing Belt Idler Pulley Flange Synchronous Wheel for Material: Aluminum Alloy; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) XL 40 Teeth 14mm drills holes Timing Belt Idler Pulley Flange Synchronous Wheel fo Material: Aluminum Alloy; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) XL 40 Teeth 16mm drills holes Timing Belt Idler Pulley Flange Synchronous Wheel fo Material: Aluminum Alloy; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) XL 40 Teeth 10mm drills holes Timing Belt Idler Pulley Flange Synchronous Wheel fo Material: Aluminum Alloy; Durable and virtually.Generic XYWHPGV Aluminum XL 15 Teeth 5mm Bore Timing Belt Pulley Flange for 10mm Belt(195eb 27b86 562c6 29a69 3fecb 70d81 Material: Aluminum; Durable and virtuallyAexit Aexit Aluminum (Electrical equipment) XL 40 Teeth 8mm drills holes Timing Belt Idler Pulley Flange Synchronous Wheel for Material: Aluminum Alloy; Durable and virtually.Aexit Aexit Aluminum (Electrical equipment) XL 40 Teeth 7mm drills holes Timing Belt Idler Pulley Flange Synchronous Wheel for Material: Aluminum Alloy; Durable and virtually.QANYEGN QANYEGN Synchronous Wheel, Timing Belt Pulley Flange Synchronous Wheel, 30 Teeth XL Type Aluminum Belt Pulley, Mechanica LIGHTWEIGHT ALUMINUM MATERIAL: Our synchronous wheel is made of lightweight aluminum material, ensuring that it is lightVooGenzek 6 PCS GT2 Timing Belt Pulley 16 Teeth 5mm Bore, VooGenzek Synchronous Gear Aluminium Wheel, with Allen Wrench, for 6mm W Specs: 16 Teeth bore aluminum GT2 timing belt pulley, Bore Diameter is 5mm, Suitable for 6mm timing belts.XYZOOM XYWHPGV 24XL037 Aluminum Timing Pulley 24T 6mm Bore Dual Flanges, 0.24 Metal(96d13 cace5 07550 5fb6c b6d83 45646 Generic XYWHPGV Aluminum XL 20 Teeth 12mm Bore Timing Belt Pulley Flange Synchronous Wheel for 10mm Belt(dc5ab 56e0f c1d85 5b18d Material: Aluminum; Durable and virtuallyGeneric XYWHPGV Aluminum 5M 16 Teeth 6mm Bore Timing Belt Pulley Flange Synchronous Wheel for 26mm Belt 3D Printer CNC(07f3d 77c Material: Aluminum; Durable and virtuallyGeneric XYWHPGV Aluminum XL 30 Teeth 8mm Bore Timing Belt Pulley Flange Synchronous Wheel for 11mm Belt(e4cbf 94d84 ff749 ec3b0 Material: Aluminum; Durable and virtuallyZeelo Zeelo 2PCS Set GT2 Synchronous Wheel 20&60 Teeth 8mm Bore Aluminum Timing Pulley with 2PCS Length 200mm Width 6mm Belt ( High-Material: Premium fiber reinforeced rubber, durable and flexible.