... drill rods,drill collar,rerun steel tooth bits, ,used drill bits stock,used mud pumps,etc Model 114-117,127,437, ... TypeTricone bits,Steel tooth bits,PDC bits Appliable water well, oil field, construction, geothermal, directional boring, and underground foundation work ... .We are a professional supplier of new and used(rebuilt) drill bits used for oil filed, waterwell. Including tricone bits, PDC bits ...