Oil and gas well drilling machines parts, namely, chokes, landing nipples, circulating sleeves, circulating plugs, flow sleeves, stroke jars, wireline sockets, wireline stems, knuckle joints, tubing swages used as a thread adapter to connect circulating line to casing or tubing string, couplings, regulators of the variable bottom hole choke type for regulating the flow of fluid, wireline subs, namely, a short drill collar and a thread crossover, and wireline lubricators; Oil and gas well drilling and production equipment in the nature of machine tools used with oil and gas well drilling and production machines, namely, separation tools used to separate oil, gas and water from the flow stream, packoff packers used to plug the wellbore around the drillstring, closing tools used to stop or isolate the fluid flow, running tools used to set downhole equipment, pulling tools used to retrieve plugs and flow control equipment from the wellbore, fishing tools used to aid in the recovery of lost tools in the wellbore, packers used to seal the wellbore, and wireline cutters