7 Well service drilling rig equipment, namely, top drives, automatic floor wrenches and automatic catwalks; information systems comprising computer hardware, computer software and electronic controls and alarms used to monitor, display, relay and archive drilling information and to control the functions, processes and operations of oil and gas drilling rig equipment, sold as a component part of said oil and gas drilling rig equipment; onshore and offshore drilling rigs; drilling control equipment for use in the oil and gas industry, namely, generators, compressors, mud and water pumps, mud pit systems, hydraulic tongs, casing tongs, shale shakers, radiator fans, top drives, winches, circulation pumps, draw works, namely, hoists, and crown savers, namely, safety devices used to prevent the traveling block from striking the crown block on a drilling rig; land drilling machines and parts therefor for use in the oil and gas industry; oil drilling equipment, namely, automated catwalks; automated casing running tools; all of the above specifically excluding gas separators