... delivery 5.IADC 447-837 API Kingdream Brand New Rolling bearing steel tooth rock rock bits 1.Introduction about us: ... TCI bits, rock bits, tricone bits, single cone bits, steel tooth bits, insert tooth bits, roller bits, drill bits, drilling tools etc ... ,532,612,622,632,732Bearing Type:HJ(metal sealed journal bearing) HA (rubber sealed journal bearingNo- sealed bearingPacking & Delivery:Packing: ...