HSC Type Chain Pulley Block Grade A Chain 20Mn2 Capacity: 0.5~20ton Dia of load chain:6mm,8mm,10mm HSC Type Chain Pulley Block Grade A Chain 20Mn2 Capacity ... : 0.5~20tonDia of load chain:6mm,8mm,10mm ... warmly welcome customers from all over the world. HSC Type Chain Pulley Block Grade A Chain 20Mn2