... .IADC 417 IADC 417 10 5/8" Kingdream carbide cutting tool HAT series for oil well 1.Introduction ... near future. 2. TCI bits series 1.Tungsten carbide insert bit of high strength and toughness is to increase the ... ,627,637,737512,522,532,612,622,632,732Bearing Type:HJ(metal sealed journal bearing) HA (rubber sealed ... unionProducts show IADC 417 10 5/8" Kingdream carbide cutting tool HAT series for oil well