Advertising Disclosure
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service levels, popularity trends, and more. The rankings reflect our opinion and should be a good starting point for shopping. By purchasing the products we rank, you’ll get the lowest price we found while we may receive a commission at no cost to you, which will help us continue to provide you with value.
Best Choice Gatuida 
Gatuida 4 Pcs 40 Turbine Shaft Worm Wheel Gear Worm Gear Shaft Tapered Bevel Pinion Gear Metal Worm Gear Worm Motor Mech Worm and worm wheel: the worm and the worm wheel is made of copper, which has a .uxcell 
uxcell Plastic RC Model Motor Shaft Slow Down Worm Gear 2mm x 6mm x 8mm 50pcs Product Name : Plastic Worm Gear;Fit for : for DIY Motor Reduction BoxBest Value PerGar 
DC 3V 15RPM Double Shafts Reversible Worms Gear Motor with Fixing Mount, High Torsion Brush Speed Reduction Motor, Elect A WORLD OF ADVANTAGES: Enjoy the benefits of a DC reduction motor that provides 15RPM speed, high torque, low noise, anduxcell 
uxcell Worm Gear Set - 0.5 Module 40:1 Reduction Rate 5mm Hole Dia Gear Shaft and 5mm Hole Dia Gear Wheel 40T Drive Gear Package Content - The set includes a 0.5 module 5MM Hole Dia brass gear shaft and a 40 Teeth brass worm gear wheel.F Fityle 
F Fityle 0.5 Module 40T Steel Worm Wheel + Brass Shaft Drive Gear Transmission Shaft High quality material selection, carefully processing create high quality product.uxcell 
uxcell 2pcs Worm Gear Shaft Brass 0.5 Modulus 1.98mm Hole Diameter Drive Gear Box Shaft Size - Modulus: 0.5; Outer Diameter: 6mm / 0.24"; Inner Diameter: 1.98mm / 0.08"; Direction of Rotation: Right; Z1=1.uxcell 
uxcell Worm Gear Shaft Brass 0.5 Modulus 3.15mm Hole Diameter Drive Gear Box Shaft Size - Modulus: 0.5; Outer Diameter: 7mm / 0.28"; Inner Diameter: 3.15mm / 0.12"; Direction of Rotation: Right; Z1=1.アベイル(Avail) Avail Aluminum Worm Shaft for WS-15C-2BB 1500C, Chrome Model Name: WS-15C-2BB (Ball Bearing Model Warm Shaft for 1500C)Obuyke 6 Pcs 40 Turbine Shaft Small Modulus Worm Brass Worm Gear Shaft Tapered Bevel Pinion Gear Worm Shaft Gear Wheels Metal W Lab stirring rods-- the worm wheel with stable performance and . easy to install.Rogugeroty Rogugeroty Oil Pump Piston Plunger Shaft Lever Worm Gear Kit for Husqvarna 435 440E 445 450 450E 340 345 350 EPA Saw 503 Fits Husqvarna 340 340E 345 345E 345EPA 350 350EPA 435 435E 440E 445 450 450E ChainsawRURBRIN RURBRIN (1PC) Upgraded W10112253 Mixer Worm Gear Replacement for Whirlpool & KitchenAid Mixers Gear Replace Parts 416289 【Package】1 PC W10112253 Mixer Worm GearReland Sun Reland Sun JGY-370 Turbo Worm Gear Motor 6mm Shaft High Torque Turbine Reducer Micro Electric Motor DC 6V (40 RPM) This gear DC motor with micro-turbine worm, you can change the wiring-connection to change motor rotation.Gatuida Gatuida 4 Pcs 40 Turbine Shaft Worm Gear Worm Wheel 0.8 Modulus 15t Tapered Bevel Gear Wheel Worm Motor Worm Screws Smal Tapered bevel pinion gear: the worm wheel with stable performance and . easy to install.uxcell uxcell Worm Gear Set - 0.5 Module 20:1 Reduction Rate 5mm Hole Dia Gear Shaft and 4mm Hole Dia Gear Wheel 20T Drive Gear Package Content - The set includes a 0.5 module 5MM Hole Dia brass gear shaft and a 20 Teeth brass worm gear wheel.Jersvimc Jersvimc 12V 10RPM High Torque DC Motor, Mini JGY 370 Motor Worm Gear Motor Small Electric Motor Low RPM Reducer Motor M 1️⃣[ What You Get ]: 1 x 12RPM dc motor, the rated voltage is 12 V. The size of a small motor with high torque and low sVILLFUL VILLFUL 6 Pcs 40 Turbine Shaft Worm Gear Worm Wheel Small Modulus Worm Spline Shafts Worm Screws Tapered Bevel Pinion Ge SPLINE SHAFTS-- Good copper material enables the performance of the worm and worm wheel combo.OKJHFD Gear Motor 12mm Single Shaft Self Locking Reversible Worm Gear Motor with Fixing Base DC24V (40RPM) [12mm Single Shaft] This DC gear motor features a single 12mm shaft, vertically arranged, suitable for various applicatiHayward Hayward RCX2125 MTR Worm Shaft Coupling Replacement for Hayward Commercial Cleaner Mtr worm shaft coupling replacementThe Wolke Worm Wrangler 5000: The Ultimate Worm Hunting Device, Worm Grunting Stick, Worm Caller, Made for Effortless Bait Collect Fun for the Whole Family: A great way to spend time outdoors and bond over a unique and educational activity.BPMFDTNI JGY370 DC 6V 12V 24V Worm Gear Motor Double Output Shaft Electric Geare Motor High Torque Self-Locking Motor 1RPM-210RPM Worm Gear Motor Double Output Shaft Electric Geare Motor High Torque Self-locking MotorBaluue Baluue 6 Pcs 40 Turbine Shaft Brass Worm Wheel Gear Computer Case Cage Small Modulus Worm Metal Worm Shaft Lab Stirring Metal worm reducer: if gearing is , a drive is required.Greartisan Greartisan DC 12V 250RPM Turbo Worm Geared Motor High Torque Turbine Worm Gear Box Reduction Motor 6mm Shaft JSX40-370 【ALL-METAL GEARS】: High-temperature resistance, high abrasion resistance, strong load capacity, sturdy and durable, effeuxcell uxcell Double Shaft Worm Gear Motor DC 12V 15RPM High Torque Speed Reduction Motor with Metal Gearbox 1.Rated voltage: DC12V; No-load speed: 15RPM; Rated torque: 20kg.cm; Rated Current: 1090mA.YARNOW YARNOW 1Set Bionic Worm Robot Science Kit Intelligent Electronic Stem for Home Physics Experiment Educational Materials Stem hands-on creation :during the assembly process of the building kit, enhance their basic stem scientific knowledge,WWinegard Winegard RP-4000 Roof Kit Winegard Roof KitBringsmart BRINGSMART 12V 12rpm DC Worm Gear Motor 70kg.cm High Torque Self-Locking Reversed Mini Turbine Geared Motor for DIY Robo Rated voltage-12V DC, No load speed-12rpm, no load current-350mA, Rated speed-9rpm, rated torque-70kg.cm, rated current-Amagogo 64Pcs Assorted Plastic Gear Wheel Car Motor Shaft Model Crafts tools DIY cars, robots, model making accessoriesAnreak 2Pcs DC 12V 381RPM Φ3x8mm Short Shaft GW1812 N20 High Torque Worm Drive Motor 3-12V 4-381RPM Miniature Gearbox (12-381) [Precision Craftsmanship] This N20 worm gear motor embodies precision craftsmanship, utilizing M0.15 micro-clock gear teAexit Aexit JSX330-370 (Electrical equipment) DC 3V 15RPM 6mm Shaft High Torque Turbine Worm Gear Box (21ry883qf427) Reduction Country of Manufacture: CHINA; Material: Metal; Rated Voltage: DC 3VTEHAUX TEHAUX 6 Pcs 40 Turbine Shaft Gear Brass Worm Wheel Spline Shafts Worm Motor Lab Stirring Rods Worm Screws Small Modulus Small modulus worm-- good copper material enables the excellent performance of the worm and worm wheel .uxcell uxcell Worm Gear Set - 0.5 Module 50:1 Reduction Rate 6mm Hole Dia Gear Shaft and 6mm Hole Dia Gear Wheel 50T Drive Gear Package Content - The set includes a 0.5 module 6MM Hole Dia brass gear shaft and a 50 Teeth brass worm gear wheel.Oumefar Oumefar Double Shaft Worm Gear Motor, 12V Motor with Metal Gearbox Turbo Worm Speed Reduction Gear Motor M8 Thread Small PREMIUM MATERIAL: Solid outer case, selected superior material, high efficiency, energy saving and corrosion resistance.Gatuida Gatuida 2 Pcs 40 Turbine Shaft 0.3cm Hole Tapered Bevel Gear Worm Motor Replacement Copper Reducer Gear Wheels Worm Gear Brass worm wheel: -rust treatment on the surface of wheel, you will have an unbelievable experience with it.Anneome Anneome 6 Pcs 40 Turbine Shaft Motor Mechanical Gears Worm Gear Worm Wheel Gear Worm Shaft Gear with Small Modulus Worme Copper worm wheel:-rust treatment on the surface of wheel, you will have an unbelievable experience with it,wheelGreartisan Greartisan DC 12V 550RPM Gear Motor High Torque Electric Micro Speed Reduction Geared Motor Centric Output Shaft 37mm Di ALL-METAL GEARS, high-temperature resistance, high abrasion resistance, strong load capacity, sturdy and durable, effectGeneric 8mm Shaft 24V Electric Gearbox Motor Worm Gear Motor Reversible, Durable, Copper Tube,Long Service Life, Ball Bearing De [High-quality Material] Made of durable materials for long service life.CHANCS CHANCS N20 Small Dc Motor 3V 5RPM Shaft Length 10mm Geared Motor with Metal Gearbox Motor for DIY RC Toys 2PCS Micro gear DC motor, high torque, low noise, long life, high transmission, fine work, pure copper motor, metal gears, loGatuida Gatuida 6 Pcs 40 Turbine Shaft Brass Worm Wheel Metal Worm Reducer Brass Worm Gear Shaft Computer Case Cage Worm Wheel G 0.3cm hole diameter tapered bevel gear wheel-- good copper material enables the excellent performance of the worm and woGreartisan Greartisan DC 12V 60RPM 7Kg.cm 8mm Double Shafts Self-Locking Reversible Worm Gear Motor with Cable, High Torque Speed R Long carbon brush high life, high precision gear design, small size, high torque, low noise, high efficiency.EVTSCAN Worm Gear Motor High Torsion 12mm Single Shaft Self Locking Reversible Speed Reduction DC Motor, with Fixed Base 6V(6RMP Self Locking Function: The worm gear motor changes the motor rotation by changing the wiring connections and has a selfFITYLE F Fityle 0.5 Modulus Brass Shaft Hole 3.175-6mm &40T Worm Wheel Worm Gear - Black+Golden, Hole 4mm 0.5 Modulus Worm Gear Wheel + Brass Gear Shaft Set.QANYEGN QANYEGN Reversible Worm Gear Motor, DC Worm Gear Motor, High Torsion Speed Reduce Electric Motor, Worm Gear Motor (100RP HIGH QUALITY AND MATERIAL: The reversible worm gear motor is made of high quality materials to ensure durability and lonReland Sun Reland Sun JGY-370 12V DC Worm Gear Motor 12 Volt High Torque Engine Mini Turbine Worm 12V Reducer Electric Motor Self-l This gear DC motor with micro-turbine worm, you can change the wiring-connection to change motor rotation.Bringsmart BRINGSMART 12V 5rpm DC Worm Gear Motor 35kg.cm Self-Locking Reversed Mini Turbine Geared Motor for DIY Robot Rotating Ta Rated voltage-12V DC, No load speed-5rpm, Rated speed-4rpm, rated torque-35kg.cmJNBCBCTALQ Gears Pinion Gear Set, Pinion Gear 0.3 Module Worm Gear Set 25T 35T 45T 55T 70T 80 Teeth Spur Gear Pinion 1:20 1:30 1:40 0.3 Module Worm Gear Set 25T 35T 45T 55T 70T 80 Teeth Spur Gear Pinion 1:20 1:30 1:40 1:50 1:60 Worm GearCHANCS CHANCS 3-6V Double Shaft Bevel Angle Gear Motor Suit Worm Reducer DIY Parts Electrical Equipment 3PCS *This is a two-shaft bevel gear motor, worm gear reduction, can be directly mounted on the wheel to make a DIY remote coEVTSCAN 12V DC Geared Motor, 12mm Single Shaft Self Locking Reversible Worm Gear Speed Reduction Motor 4‑25KG.CM(8RPM) Working Principle: This DC geared motor is a worm gear motor, by changing the wiring connection to change the motor rotaYunir Worm Gear Motor, 12mm Double Shaft Self Locking Reversible High Torsion Worm Speed Reduction, High Speed Reduction Motor [Double Shaft Design] The gear motor features dual output shafts, arranged vertically to the motor shaft, suitable for vViaGasaFamido ViaGasaFamido 24V 8mm Shaft Worm Gear Motor, High Torsion Metal Gearbox Reversible Electric Turbo Speed Reduction Motor Metal Gear:Metal gears are characterized by high precision, durability and low loss.It makes your motor perform better.Hilitand 1Pc DC 12V Gear Box Reversible Reduction Motor High Turbo Worm Reduction Electric Motor CW/CCW (62RPM) for Windows A Doo More Choice: No-load speed choice : 5rpm / 6rpm / 20rpm / 40rpm / 62rpm.CHANCS CHANCS 12V 470RPM DC Worm Gear Motor 8mm Shaft self-Locking Motor for turnstiles,Curtain Machines Turbine-worm geared motors are compact and have a self-locking function. when the motor is not energized, the output shaEATAKWARD EATAKWARD Worm Gear Kit Replacement for MTD Troy-Bilt Horse Bronze Tiller Tine Shaft Worm Gear Kit Replaces # GW-11527 1 ✅【Compatibility】: The Gear Kit Compatible with MTD Troy-Bilt.Reland Sun Reland Sun JGY-370 Turbo Worm Gear Motor 6mm Shaft High Torque Turbine Reducer Micro Electric Motor DC 6V (66 RPM) This gear DC motor with micro-turbine worm, you can change the wiring-connection to change motor rotation.Joyzan Joyzan Worm Geared Motor, Dc 12V Gear Box Motor Reversible High Torque Electric Motor Electric Drive Outer Diameter 20mm High Torque Turbo Gear Motor: The DC 12V gear box no self locking, good operation, hardness material, good toughness, imwangjue Snow Blower Repair Part Worm Gear Metal 20T Teeth Gear Replacement for 717-0528A 717-0528 917-0528A 717-04861 Gear Repla 【Portable and Lightweight】: Small in size and light in weight, making it extremely convenient to carry.VoutE VoutE Worm Bass Fishing Lure Kit, Soft Plastic Worms, Fake Earthworm, Lifelike Artificial Baits, Silicone Earthworm Set Artificial Fishing Baits are Suitable for different kinds of fishes, and can Attract the fish by smell dispersionNDNCZDHC NDNCZDHC 1218-N20 DC6V Gear Motor 12mm Single Shaft Gear Reduction Motor with Fixing Base Small Brush DC Worm Gear Motor High Density Molecular Paint Coating: This gear motor features a brushed DC motor with a triple-layer high-density molecReland Sun Reland Sun JGY-370 Turbo Worm Gear Motor 6mm Shaft High Torque Turbine Reducer Micro Electric Motor DC 6V (150 RPM) This gear DC motor with micro-turbine worm, you can change the wiring-connection to change motor rotation.Reland Sun Reland Sun JGY-370 Turbo Worm Gear Motor 6mm Shaft High Torque Turbine Reducer Micro Electric Motor DC 6V (10 RPM) This gear DC motor with micro-turbine worm, you can change the wiring-connection to change motor rotation.Reland Sun Reland Sun JGY-370 Turbo Worm Gear Motor 6mm Shaft High Torque Turbine Reducer Micro Electric Motor DC 6V (18 RPM) This gear DC motor with micro-turbine worm, you can change the wiring-connection to change motor rotation.Reland Sun Reland Sun JGY-370 Turbo Worm Gear Motor 6mm Shaft High Torque Turbine Reducer Micro Electric Motor DC 6V (30 RPM) This gear DC motor with micro-turbine worm, you can change the wiring-connection to change motor rotation.Reland Sun Reland Sun JGY-370 Turbo Worm Gear Motor 6mm Shaft High Torque Turbine Reducer Micro Electric Motor DC 6V (210 RPM) This gear DC motor with micro-turbine worm, you can change the wiring-connection to change motor rotation.Reland Sun Reland Sun JGY-370 Turbo Worm Gear Motor 6mm Shaft High Torque Turbine Reducer Micro Electric Motor DC 6V (90 RPM) This gear DC motor with micro-turbine worm, you can change the wiring-connection to change motor rotation.Reland Sun Reland Sun JGY-370 Turbo Worm Gear Motor 6mm Shaft High Torque Turbine Reducer Micro Electric Motor DC 6V (23 RPM) This gear DC motor with micro-turbine worm, you can change the wiring-connection to change motor rotation.Anreak 2Pcs DC 12V 68RPM Φ3x8mm Single Shaft N20 Worm Motor with Encoder, 3-12V 4-381RPM High Torque for Robotics and DIY RC To [High Precision Hall Sensor]: This N20 encoder motor with high precision 7PPR hall sensor ensures that it can accuratelyGearwell Double Shaft Worm Gear Motor, High Torsion Brush Speed Reduction Motor with Fixing Mount for Robots Ovens BRUSH DC MOTOR: The micro gear motor is a brush DC motor with 3 layers of high density molecular paint coating, which isReland Sun Reland Sun JGY-370 Turbo Worm Gear Motor 6mm Shaft High Torque Turbine Reducer Micro Electric Motor DC 6V (6 RPM) This gear DC motor with micro-turbine worm, you can change the wiring-connection to change motor rotation.EVTSCAN Double Shaft Worm Gear Motor High Torsion Brush Speed Reduction Motor, with Fixing Mount DC3V 15RPM BRUSH DC MOTOR: The micro gear motor is a brush DC motor with 3 layers of high density molecular paint coating, which isEVTSCAN Double Shaft Worm Gear Motor, DC12V 381RPM Micro DC Gear Brush Speed Reduction Motor BRUSHED DC MOTOR: The micro gear motor is brushed DC motor, three layers of high density molecular paint coating, durablGrcfumo Output Single Shaft, Stepper Motor Output Shaft, Motor Output Single Shaft for Worm Reducer Gearbox NMRV040 RV040 Nema3 SLICK TRANSMISSION WITH LOW NOISE: Experience slick and quiet operation with our output single shaft, designed for low nCHANCS CHANCS N20 Small DC Motor 6V 200RPM Shaft Length 10mm Geared Motor with Metal Gearbox Motor for Electronic Equipment 2PC Micro gear DC motor, high torque, low noise, long life, high transmission, fine work, pure copper motor, metal gears, loEVTSCAN DC6V 190RPM Gear Motor,with Fixing Mount Dual Shaft Worm Speed Reduction Micro Motor, for Intelligent Car SPECIFICATIONS: 1218-N20 double shaft worm gear reduction motor, the rated voltage is DC6V, the speed is 190RPM, efficieFafeicy Worm Gear Motor, Double Shaft Gear Motor, Worm Gear Motor Double Shaft Gear Motor 53RPM DC 12V Speed Reduction Motor, Va STRONG OUTPUT POWER AND HIGH LOAD BEARING CAPACITY] - The brushless DC motor features all metal gears, ensuring high temGearwell Gearwell Worm Gear Motor, 12V 160RPM Reversible Self-Locking Motor, 12mm Shaft Worm Drive Gearbox Motor for Automation U [DUAL OUTPUT SHAFTS DESIGN] The gear motor features vertical dual output shafts, providing versatility for different appLSMCCOTP Adjustable Speed Motor Worm Reducer NMRV050 14mm Input Shaft 5:1-100 :1 Gear Ratio Nema 34 Motor Worm Gearbox 90 Degree Smooth transmission, low noise; The multi-faceted installation;Aluminum alloy enclosure, thermal performance, large carrEVTSCAN Gear Motor DC 12V 16RPM Dual Shaft Turbo Worm Motor Speed Reduction Motor, for Machine POWERFUL OUTPUT: The DC geared motor features all metal gear that is heat resistant, providing strong output power, andTimken Timken 351267 Power Steering Worm Shaft Seal Product Type :Auto PartTimken Timken 41267S Power Steering Worm Shaft Seal Item Package Dimension: 4.67L x 2.67W x 0.8H inchesconon Worm Drive Gearbox NMRV075 7.5:1 Ratio B5 Flange 19mm Input Shaft Reduction:10:1LSMCCOTP Adjustable Speed Motor DC12V 24V Powerful Torque Gearmotor Encoder Geared Motor D-Shaft High Power Reversed Low Speed 70 【PURE COPPER WIRE CORE ROTOR】: With precision winding technology, the turbo worm geared motor power instant increased bySpacnana High Torque Reversible Worm Gear Motor, 12V DC Reduction Gear Motor 40rpm, Motor Shaft Vertical, for Windows, Door Opene [Vertical output shaft construction] The transmission output shaft is arranged vertically to the motor shaft.Timken Timken 710155 Power Steering Worm Shaft Seal Item Package Dimension: 4.67L x 2.67W x 0.8H inchesTimken Timken 441130 Power Steering Worm Shaft Seal Product Type :Auto PartTimken Timken 710303 Power Steering Worm Shaft Seal Item Package Dimension: 4.67L x 2.67W x 0.8H incheswosume Reversible Worm Gear Motor, 8mm Shaft Speed Reduce Motor 12V Speed Reduce Motor, Durable Window Openers(12V, 12RPM) conon Worm Drive Gearbox NMRV130 80:1 Ratio B5 Flange 28mm Input Shaft Speed Reducer Reduction:80:1conon Worm Drive Gearbox NMRV063 50:1 Ratio B5 Flange 19mm Input Shaft Speed Reducer Reduction:40:1MANHONG Electric Small Motor 6mm*50mm Screw Shaft Worm Gear Motor High Torque M6 Shaft Reduction Worm Gear Motor (Speed(RPM) : 2 Pure copper wire core rotor: Using precision winding technology, the motor power is increased by 20%.MANHONG Electric Small Motor 6mm*50mm Screw Shaft Worm Gear Motor High Torque M6 Shaft Reduction Worm Gear Motor (Speed(RPM) : 1 Pure copper wire core rotor: Using precision winding technology, the motor power is increased by 20%.MANHONG Electric Small Motor 6mm*50mm Screw Shaft Worm Gear Motor High Torque M6 Shaft Reduction Worm Gear Motor (Speed(RPM) : 3 Pure copper wire core rotor: Using precision winding technology, the motor power is increased by 20%.MANHONG Electric Small Motor 6mm*50mm Screw Shaft Worm Gear Motor High Torque M6 Shaft Reduction Worm Gear Motor (Speed(RPM) : 4 Pure copper wire core rotor: Using precision winding technology, the motor power is increased by 20%.MANHONG Electric Small Motor 6mm*50mm Screw Shaft Worm Gear Motor High Torque M6 Shaft Reduction Worm Gear Motor (Speed(RPM) : 3 Pure copper wire core rotor: Using precision winding technology, the motor power is increased by 20%.conon Worm Drive Gearbox NMRV110 80:1 Ratio B5 Flange 24mm Input Shaft Speed Reducer Reduction:80:1MANHONG Electric Small Motor 6mm*50mm Screw Shaft Worm Gear Motor High Torque M6 Shaft Reduction Worm Gear Motor (Speed(RPM) : 9 Pure copper wire core rotor: Using precision winding technology, the motor power is increased by 20%.conon Worm Drive Gearbox NMRV090 80:1 Ratio B5 Flange 24mm Input Shaft Speed Reducer Reduction:75:1MANHONG Electric Small Motor 6mm*50mm Screw Shaft Worm Gear Motor High Torque M6 Shaft Reduction Worm Gear Motor (Speed(RPM) : 3 Pure copper wire core rotor: Using precision winding technology, the motor power is increased by 20%.MANHONG Electric Small Motor 6mm * 50mm Screw Shaft Worm Gear Motor High Torque M6 Shaft Reduction Worm Gear Motor (Speed(RPM) : Pure copper wire core rotor: Using precision winding technology, the motor power is increased by 20%.MANHONG Electric Small Motor 6mm * 50mm Screw Shaft Worm Gear Motor High Torque M6 Shaft Reduction Worm Gear Motor (Speed(RPM) : Pure copper wire core rotor: Using precision winding technology, the motor power is increased by 20%.MANHONG Electric Small Motor 5840-31ZY Long Output Shaft Worm Gear Motor 12V 24V DC High Torque High Power Double Shaft Worm Gea Pure copper wire core rotor: Using precision winding technology, the motor power is increased by 20%.MANHONG Electric Small Motor 6mm * 50mm Screw Shaft Worm Gear Motor High Torque M6 Shaft Reduction Worm Gear Motor (Speed(RPM) : Pure copper wire core rotor: Using precision winding technology, the motor power is increased by 20%.