Forging 9W8552RC For Excavator Parts Rock Bucket Teeth for CAT J550 matching with 6i6554 Bevel Adapter (60mm) or 1U1553 Bevel Adapter(60mm) etc. bucket adapter for excavator with pin 6Y8558 and retainer 8E5559.Rock tooth used to the contruction and mining condition, has casting and forging two different production processes. Replaced for world famous brand Caterpilliar. Aili is manufature of GET parts since 1980. We do OEM for VOLOVO SDLG SANY and so on, diversity and quality is our advantage.