portable top drive systems, namely, an electric or hydraulic motor for use on a drilling rig; power catwalks, namely, a machine that delivers drill pipe or casing to the top drive; traction winches; parts of oil and gas well drilling machines, namely, hydraulic power slips and casing accessories, namely, torque rings, casing shoes, casing profile nipples, bit release tools, centralizers and metal stabilizers, under reamers, pump down cement floats and casing wear band and sleeve protectors used to protect the couplings and casing during drilling
Machineryrental and leasing of top drive systems and drilling rigs; installation services, namely, installing top drive systems on drilling rigs; maintenance services, namely, maintaining top drive systems; oil and gas well drilling services
Building Construction and Repair