Product Description   Product Description DIN Standard Industrial Sprocket Bore Finished bore, Precossing bore, Taper bore  Color Nature steel or black Standard ANSI, DIN, ISO Type Simplex, Duplex, Triplex Surface treatment Black oxide, Zinc plated Heat treatment High Frenquency Quenching Detailed Photos 1.Chain used HRSY sprocketes are manufactured with a tooth profile and dimensional precision … Continue reading China best Hardened Teeth Plate Wheel Sprockets