American Design, Manufacturing & Assembly Services

Throop Rock Bit is headquartered in Tonkawa, Oklahoma, USA and takes great pride in being a U.S. owned and operated manufacturer in an age when nearly all other bit companies have chosen to have products manufactured overseas. We are committed to the local economy and have a dedicated work force of highly skilled machinists, welders, assembly personnel and seasoned veterans in manufacturing and design, serving the drilling industry for over 70 years.