7 metal working power tool component parts, namely jigs, fixtures and clamps and parts thereof, namely base plates, angle plates, grid fixture plates, sliding units, slide bases, lock risers, lock buttons and screws, stops, locating adaptors, riser pads, round adaptors, positioners, support cylinders, locating cylinders, screw jacks, screw jack tips, riser cylinders, tooling blocks, and locating screws; industrial vacuum machines for use in metal working; hydraulic holding machines for use in metal working and replacement parts thereof; and industrial machine elements, namely levers, grips, handles, hand cranks, knobs, hand wheels, ball screws, screw dampers, drive tensioners, sprocket idlers, pulley idlers, switch dogs, switch dog brackets, limit switch brackets and ball bearings