6 Rods, namely, threaded metal rods, flux coated metal rods, solder rods of metal, screwed rods of metal, all for rock drilling; rods including building and connecting rods, namely, pipes and tubes of metal; compressed air, gas and fluid containers of metal; metal hose couplings for use with metal pipes; metal hose clips for use with metal pipes; casings of metal; pressure fluid pipes of metal; metal dowels; steel balls for use as ball bearings; guide pins, valves not being part of machines, springs, clamps, sleeves in the nature of cable junction, pipe support, expanding sleeves for affixing screws and shanks of metal; metal tophammer tubes; drill pipes of metal for use in well boring; adaptors for pipes of metal; water-pipe valves of metal