Specification Brand : DINGGUANGHE-CUP BulletPoint1 : Package List: 1pc Spur Gear, 1pc M5 screw BulletPoint2 : The gear is made of 45# steel, and the surface maybe with rust on some hardened gears. BulletPoint3 : High transmission power, long life, stable operation, high reliability, and a constant transmission ratio. BulletPoint4 : Gear inner hole tolerance is positive 0-0.03, with locking hole. BulletPoint5 : Batches of different parameters may change slightly, please prevail in kind. Color : 39 Teeth ExternallyAssignedProductIdentifier : 8306056658021 ItemName : DINGGUANGHE-CUP Durable 1 Modulus 39 Teeth Pinion 1M39T Bore 8/10/12mm Worm Spur Gear for Shaft Drive Gearbox (Hole Diameter : 8mm, Number of Teeth : 39 Teeth) ItemPackageQuantity : 1 ItemTypeKeyword : spur-gears Manufacturer : DINGGUANGHE-US Material : Metal NumberOfItems : 1 PartNumber : DINGGUANGHE-US ProductDescription : Package List: 1pc Spur Gear, 1pc M5 screw The gear is made of 45# steel, and the surface maybe with rust on some hardened gears. High transmission power, long life, stable operation, high reliability, and a constant transmission ratio. Gear inner hole tolerance is positive 0-0.03, with locking hole. Batches of different parameters may change slightly, please prevail in kind. ProductSiteLaunchDate : 2021-06-29T02:49:51.513Z Size : 8mm