Aerators being machines; Air-operated power tools, namely, wrenches, ratchet wrenches, drills, grinders, orbital sanders,collets; Angle valves being parts of machines; Centering drilling bits being parts of machines; Compressed air guns for the extrusion of mastics; Compressed air pumps; Dust removing installations for cleaning purposes; Electric sanders; Gas-operated cutting blow pipes; Grinding machines for metalworking; Machine elements not for land vehicles, namely, pneumatic ball transfer units; Machine tools for forming, riveting, swaging, and flaring of metal and plastics; Parts for pneumatic blow guns, namely, inflator tips, inflator valves, valve adapters, nozzles, nipples, couplers, connectors and pivots; Pneumatic blow guns for use in a manufacturing process to blow dust off parts, workstations or wherever necessary; Pneumatic grease guns; Pneumatic pumps; Power-operated spray guns; Power drill bits; Power saw blades; Pressure regulators being parts of machines; Vacuum cleaners; Power-operated tools, namely, grinders