6 INJECTION, COMPRESSION AND DIE CASTING MOULDS OF METAL; UNIT DIE HOLDERS OF METAL FOR INJECTION, COMPRESSION AND DIE CASTING MOULDS AND FOR MACHINE TOOLS, IN PARTICULAR FOR BLANKING, STAMPING, EMBOSSING AND DRAWING DIES; REPLACEMENT PARTS FOR THE AFORESAID GOODS; FLOW AND CLOSURE COMPONENTS OF METAL FOR TEMPERING SYSTEMS, IN PARTICULAR JUNCTIONS, CONNECTION PIECES, COUPLING NIPPLES, FLEXIBLE TUBES; SLEEVES, BUSHES, CASTING BUSHES, EJECTOR PINS, AND SPRINGS OF METAL; METAL SCREWS, METAL HEADLESS SCREWS, METAL BOLTS, METAL GATE EYES AND HOOKS, COTTER PINS, METAL SLIDING AND CARRIER BLOCKS, METAL THRUST PIECES AND OTHER FASTENING MID CONNECTING PIECES OF METAL, NAMELY NAILS, RIVETS; POSITIONING AND GUIDING ELEMENTS, NAMELY CABLE CLAMPS OF METAL, METAL TUBES, THREADED METAL RODS AND PLATES, PROFILES, ANGLES AND STRIPS OF METAL FOR THE CONSTRUCTION OF TOOLS AND APPLIANCES