... drill bits, drilling tools etc. we have been in line with the principle of "faith-based, quality of survival and mutual ... for our customers". We are looking forward to establishing relationships with you in the near future. 2. TCI bits series ... 532,612,622,632,732Bearing Type:HJ(metal sealed journal bearing) HA (rubber sealed journal bearingNo- sealed bearingPacking & Delivery:Packing: plywood case or ...