7 Power tools, namely, electrically powered, powder-actuated, gas-operated, pneumatic or combustion type fastener drivers, staplers, other than for office use, nailers, screw guns, and accessories therefor, namely, air compressors, air hoses, air hose couplers, screw gun handle extenders; motors, other than for land vehicles; machine coupling and transmission components (except for land vehicles); machines and apparatus for packaging, sealing, inverting, glueing, marking and coding; nail guns and staple guns, electric and pneumatic; hot melt glue guns; compressors; screw systems, included in this class, namely, screw pumps, archimedian screws, screw jacks, screw machines, screw separators; machines, tools and apparatus for fastening and joining; power staplers; tackers [machines]; nail guns, electric and pneumatic