... 5.Delivery:7-15days EX200-2 Excavator Track roller 1.The company mainly produces all kinds of ... excavator and bulldozer undercarriage parts,such as Track Roller, Carrier Roller, Sprocket ,Segmnet, Front Idler, Track Link ... and Nuts,Track Bush and Pin,Bucket Pin,Roller Guide,Idler Yoke and so on undercarriage parts ... Picture: 5.Certificate: 6.Workshop: EX200 High strength excavator Hitachi track roller