Specification Brand : Boston Gear BulletPoint1 : Transmits torque between parallel shafts to provide rotational power to another part of a motorized system BulletPoint2 : Pressure angle of 20 degrees for a lower contact ratio between gears, resulting in higher load capacity than smaller pressure angles BulletPoint3 : Diametral pitch of 20 for applications requiring a balance between transferring torque and controlling changes in speed and direction of rotation with precision BulletPoint4 : Low carbon steel (.2 percent carbon) for applications where the hardness and strength of higher levels of carbon are not needed to transmit torque and motion BulletPoint5 : Material: black oxide #45 steel ExternallyAssignedProductIdentifier : 8935490252221 ExternallyAssignedProductIdentifier1 : 781711099025 ExternallyAssignedProductIdentifier2 : 0781711099025 ItemName : Boston Gear YA20 Spur Gear, Steel, Inch, 20 Pitch, 0.500" Bore, 1.100" OD, 0.500" Face Width, 20 Teeth ItemPackageDimensions_Height : 4.826 centimeters ItemPackageDimensions_Length : 6.604 centimeters ItemPackageDimensions_Width : 5.334 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : spur-gears Manufacturer : Boston Gear Material : Alloy Steel ModelNumber : YA20 NumberOfItems : 1 NumberOfTeeth : 20 PartNumber : YA20 ProductDescription : Product name: 1Mod 24T spur gear Teeth outer diameter: 26mm; Total height: 18mm; Teeth height: 10mm; Step diameter: 17mm Bore: 5/6/6.35/7/8/10/12mm Fix set screws: M4 x 2pcs Material: black oxide #45 steel