7 Vacuum pumps for use in commercial and residential heating, ventilation, air conditioning, and refrigeration systems; liquid and vapour recovery machines; refrigerant recovery units, hydrocarbon recovery units, gas recovery units; ball valves; couplers; brazing and soldering torches; gas manifolds and tubes; compressors, compressing machines; valves; hose adaptors and couplings; filters; power tools, electric hand tools, electric hand drills, power tool and drill attachments; power hammers, saws, circular saws; staple guns; grinding machines, grindstones; cutters and cutting machines; punctures and punching machines; stampers and stamping machines; electricity generators; gas-operated welding apparatus, welding machines, gas-operated welding torches; sanders, polishers and electrically-operated brushes; filters, filtering machines; pumps, vacuum pumps, water pumps and impellers; die-cutting and tapping machines; drill stands, hammer drills, drill presses, drilling machines; guides for machines; drilling bits, drill chucks