7 Pneumatic-hydraulic drives for machines; pneumatic-hydraulic drives for power operated hand tools; power operated machine tools, namely, joining machines for sheet material, namely, metals, plastics and other manufacturing sheet goods; metal punching machines; metal stamping machines; metal forming machines; metal pressing machines; power operated machines for clamping, positioning, holding, crimping, shearing, cuttings, stamping marking, bending, folding or welding sheet material; power-operated hand tools for metal fastening