Machines, machine tools and machine tool parts and accessories used in well drilling and well working, namely, power drilling tools, coiled tubing, workover drill string, pistons, hoses, electric handheld drills, electric motors for machines, hydraulic valves, pneumatic valves, wireline rods and cable, drill bits, swivels, under reamers, cutters, mud mixing motors, reamers, hole openers, drill bit centralizers, rotary sidewall coring bits, centalizers for casing and tubing, valve actuators, nitrogen degassers, drilling motors, rotating impact hammers, downhole motors and rotary steering apparatus for directional drilling; power operated tubing workover and pipeline cleanout tools, namely, wellhead jetting tools, cleaning heads, and hydraulic power tubing tongs; and power operated tubing fishing tools