Features1Steel Material: This sprocket chain set is constructed with metal quality steel materials for maximum power transfer and long life. 2Forging Process: This electric bike sprocket kit adopts forging process, no corrosion, no deformation, durable for long term. 3Complete Kit: This conversion kit is complete, including 410 gold 11T (small H hole) sprocket, 38 links bike chain and bike 22T flywheel. 4Replacement Parts: Sprocket and chain sets are available as bike replacement accessories to replace damaged or old original parts. 5Multi Purpose: Suitable for scooters, twisting car modification, bike modification into electric bike, various machine modification.SpecificationItem Type: Electric Bike Sprocket Chain SetMaterial: SteelGross Weight: 429g / 15.1ozPackage List1 x Chain1 x Sprocket1 x Flywheel