#25 Roller Chain Sprocket Type B 12mm Bore 15 Tooth, Hardened Antirust 1045
#25 Roller Chain Sprocket Type B 12mm Bore 15 Tooth, Hardened Antirust 1045 Steel Drive Sprockets 25B15-12mm. The surface of the sprocket is blackened, and it is corrosion-resistant and rust-proof. Sprockets are widely used in power transmission in the fields of agricultural machinery, woodworking machinery and machine tools.