Specification AgeRangeDescription : adult Brand : KUAOXK BulletPoint1 : 1. High strength, high torque, good comprehensive mechanical properties BulletPoint2 : 2. Low vibration, low noise, easy to clean and maintain, easy to operate BulletPoint3 : 3. Smooth surface can withstand slight wear and tear, hardened to improve work efficiency. BulletPoint4 : The pinion can be mounted on a shaft without a hub. BulletPoint5 : This 20 tooth, 8mm REX bore sprocket is ready to ! The bore fits our 8mm REX shaft perfectly and provides positive drive. Color : One Color ExternallyAssignedProductIdentifier : 9345665654696 ItemName : Bevel Gear Pinion Hardware Mechanical 1pcs Spur Gear 1M52/53/54/55/56/57/58/59T Rough Hole 8mm Pinion Gear Carbon Steel Motor Gear Total Height 10mm(1M57Teeth-bore 8mm) ItemPackageDimensions_Height : 10 centimeters ItemPackageDimensions_Length : 10 centimeters ItemPackageDimensions_Width : 10 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : internal-gears Manufacturer : KUAOXK Material : Metal ModelName : OSSIL ModelNumber : KUAOXK NumberOfBoxes : 1 NumberOfItems : 1 PartNumber : KUAOXK ProductDescription : 1. High strength, high torque, good comprehensive mechanical properties 2. Low vibration, low noise, easy to clean and maintain, easy to operate 3. Smooth surface can withstand slight wear and tear, hardened to improve work efficiency.