Product Specification:Name: 04C Sprocket Wheel Chain GearType: Sprocket with StepModel: 04C 25HMaterial: 304 Stainless SteelTooth Thickness: 2.8mmTotal Thickness: 15mmNumber of teeth: 10/11/12/13/14/15/16/17/18/19/20/21/22/23/24/25 TeethHole: 6mm/8mmApplication:For use with roller chainsFeatures:1.304 stainless-steel material, wear-resistant and corrosion-resistant, acid and alkali resistant, rust-proof.2.Smooth running, excessive load capacity, long existence and good gloss.Package: According in your Choose!