Specification Brand : HARFINGTON BulletPoint1 : Size - Modulus: 0.5; Outer Diameter: 7mm / 0.28"; Inner Diameter: 3.15mm / 0.12"; Direction of Rotation: Right; Z1=1. BulletPoint2 : Material - The gear shaft is made of brass material, not easy to wear and tear, durable, and can last for a long time. BulletPoint3 : Feature - The gear shaft is compact, small volume, and light weight, it is easy to install and use, and the transmission process is smooth. BulletPoint4 : Application - It is used to decelerate the small motor and change the transmission direction. It can be applied to small motor products. BulletPoint5 : Package Content - 1pcs x brass gear shaft. Color : One Color ExternallyAssignedProductIdentifier : 9164385856292 ItemName : HARFINGTON Worm Gear Shaft Brass 0.5 Modulus 3.15mm Hole Diameter Drive Gear Box Shaft ItemPackageDimensions_Height : 9.3 centimeters ItemPackageDimensions_Length : 0.7 centimeters ItemPackageDimensions_Width : 6.1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : worm-gears Manufacturer : HARFINGTON Material : steel ModelNumber : hta220706hh0526 NumberOfItems : 1 PartNumber : hta220706hh0526 ProductDescription : The gear shaft is made of brass material, not easy to wear and tear, durable, and can last for a long time. The gear shaft is compact, small volume, and light weight, it is easy to install and use, and the transmission process is smooth. It is used to decelerate the small motor and change the transmission direction. It can be applied to small motor products.