O-K Bit Service - Providing Tri-Cone Drill Bits, Rock Bits, Reverse Circulation Drill Bits, Hole Openers and Water Well Drill Bits O-K Bit based in Oklahoma provides new and used drill bit for oil and gas, geothermal, direction, and water well drilling to customers worldwide. WebOUR SERVICES Retipping, Reamer and hole opener, Manufacturing subs and bit bores, full service and rebuild, TCI removal and replacement. We also buy surplus and used drill …