Structural parts of power operated machinery, namely, thread milling cutters, inserts for power-operated thread mills, extensions for power tools, reducers for power tools, machine tool holders and parts for the foregoing

Services Entailing the Testing and Gauging of Threads on Pipeline or Tubing Sections Used in the Oil or Gas Production Business

Structural parts of power operated machinery, namely drills, drill inserts, namely bits and chucks, and power drilling systems comprised of drills, drill bits, and drill chucks