1.Product:CAT330 Idler 2.Warranty:2000 hours 3.Material:40Mn 4.Certification: ... under carriage parts ,such as track roller,carrier roller,sprocket,front idler,track link assy,track shoe,track bolt and nuts,track ... so on.4.Catalogue:(caterpillar track roller,carrier roller,sprocket,front idler,track link assy) track rollertop rollersprocketfront idlertrack linkCATERPILLARTRACK ROLLERE55E70BE120B/311 ...