7 Motors and engines, namely, electrical, gas or diesel motors and engines for machines, except for land vehicles; machine coupling and transmission components, namely, couplings for machines and power transmissions and gearing for machines; hydraulic and mechanical propulsion mechanisms, other than for land vehicles, namely, hydraulic and mechanical pumps, drives, hammers, and jacks; pneumatic propulsion mechanisms, namely, pneumatic pumps and pneumatic drives; hydraulic tools, namely, hydraulic drives, hydraulic hammers, and hydraulic jacks; pumps, namely, electric pumps, rotary pumps; pump or compressor equipment for oil and gas, namely, oil pumps for use in electrical, gas or diesel motors and engines, compressors for machines, and compressor packages for industrial refrigeration and cooling systems