1:forging idlers, front idler 2:50Mn, 52-58HRC 3:Models: Various 4:Warranty:6 Month 5:MOQ&Delivery: 2Pcs, 30Day Casting steel Idlers,front idlers , Undercarriage Spare parts ,Front Idlers For Excavator Our Advantages: Price:we are the factory,we have the whole production line as casting,heat treament,quality control in house which help us save more cost than others ,we would like to cooperate ...