1.Excavator sprocket,Sprocket Wheel,Sprocket segments, teeth rim 2.Material:alloy steel Type: Sprocket D31Other type is in the following :1) Komatsu: PC40, PC60- ... 5-6-7, PC100, PC120, PC130, PC240, PC200-1-3 ... on . Our main spare parts are track roller,top roller,sprocket,track link ,bolt & nut, bucket ,teeth ,adaptor,muffler etc ...