420 M Cheap oyotcycle a shop Class Steel Chain

Product Description 1)Typetransmission chain2)Materialssteel: 40Mn(Plate) 30CrMnTi(Pin) 20Mn(Bush) Mn10(Roller) 65Mn(Clip)3)Chain No.4204)Warranty30000KMs5)ProcessSand blasting, heat...