Power operated machines and apparatus for digging, excavating, mechanical handling, lifting, loading and transporting of earth, minerals, goods and materials, soil, and crops other than by hydro excavation, namely, backhoes, backhoe loaders, excavators, crawlers, handlers, loaders, and forklifts; transmissions not for land vehicles; axles for machines; hydraulic cylinders and pistons for machines; oil, fuel and air filters for machines; oil, fuel and air filters for motors and engines; struct...