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 ... D3C, D5, D5B, D5D, D6C, D6D, D6H, D7G, D8K 4) Daewoo: DH220, DH280, R200, R210 5) Kato: HD250, HD400 (HD450), HD500 ... on . Our main spare parts are track roller,top roller,sprocket,track link ,bolt & nut, bucket ,teeth ,adaptor,muffler etc . ...