Electrically and/or compressed air driven machines for working and/or processing of metal, timber, plastics, concrete or stone or other materials, namely, grinding machines; polishing machines; brushing machines; sawing machines; milling machines; planing machines; routing machines; sanding machines; power files; and drilling machines; power operated tools, namely, hammer drills, and plate shears; screwing machines and screwing inserts, namely, bits, therefor; machine parts, namely, guides, s...