Air filters for mechanical purposes; Air filters for pneumatic controls being part of machines; Filter elements for fuel filters; Fuel filters; Oil filters; Oil filters for motors and engines; Parts for compressed-air tools, namely, brakes, filters, hoses, pipes, couplings valves, switches, compressors, clamping tools and injectors; Pneumatic air preparation equipment, namely, airline filters, lubricators, and regulators, all being parts of machines; Air filters for motors and engines