pneumatic tools, namely, drills, screwdrivers, nutrunners, impact wrenches, grinders and percussion tools, namely, chippers, riveters, scalers, chipping hammers, bench and floor rammers and sump pumps; power-operated fastening tools, namely, riveters, screwdrivers, nutsetters and impact wrenches; power-operated metal removal tools, namely, grinders, sanders, chippers and frills, rotary and sump pumps; air motors and power-operated metal cleaning scalers

boiler and refuse tube cleaning devices, namely, brushes, grinders and scalers; boiler tube pullers; boiler tube expanders; sand mullers; hand-operated fastening tools, namely, riveters, screwdrivers, nutsetters and impact wrenches; hand-operated metal removal tools, namely, grinders, sanders, chippers and frills