Air-operated power tools, namely, specify impact wrenches, ratchet wrenches, drills, grinders, orbital sanders, etc.; Blow torches, namely, gas operated cutting torches; Cutting torches; Electric screwdrivers; Gas-operated blow torches; Metal welding machines, namely, saws and cutters; Milling cutters being machine tools; Oxygen cutting devices; Soldering apparatus, gas-operated; Three dimensional (3D) printers