... supply all kinds of rock bits, such as PDC bits, TCI bits, rock bits, tricone bits, single cone bits, steel ... to establishing relationships with you in the near future. 2. TCI bits series 1.Tungsten carbide insert bit of high strength ... ,532,612,622,632,732Bearing Type:HJ(metal sealed journal bearing) HA (rubber sealed journal bearingNo- sealed bearingPacking & Delivery:Packing: plywood case or wooden ...