7 Power operated abrasive wheels; earth augers; earth moving machines, namely, graders, loaders, scrapers; tool bits for machines; bits for power drills; parts of machines, namely, blades, cylinders, grindstones, millstones; blades for power saws; bulldozers; shaft couplings, other than for land vehicles; cranes; mobile cranes; drilling machines and parts thereof; hydraulic jacks; milling machines; positive displacement pumps; water pumps for use in motors and engines; hydraulic pumps; engine oil pumps; cylinder heads, other than for land vehicles; parts of earth moving machines, cultivators, harvesters, disk harrows, seeders and mining machines, namely, teeth, bucket blades, cutting edges, bits, safety hooks; transmission chains other than for land vehicles; parts of machines, namely, rollers, steamrollers, grease rollers and rings; transmission shafts other than for land vehicles; earth moving machines, namely, diggers; ditchers; parts of machines, namely, drilling heads; excavators; tractor machine parts, namely, rubber tracks and pads, needle bearings, spherical bearings, crankshafts, track chains other than for land vehicles; parts of loaders, scrapers, excavators, bulldozer rippers and motor graders, namely, pins, bushes, crown wheels, pinions, idlers, sprockets, sprocket rims, sprocket segments