Cotters made of metal; Drill pipe attachments, namely, metal drill collars; Fittings of metal for furniture; Furniture casters of metal; Guard rails of metal; Handrails of metal; Joists of iron or steel; Metal furnace screens; Metal stabilizers for ladders; Metal step ladders; Metal step stools; Palings of metal; Pipe muffs of metal; Rods of metal for brazing and welding; Vats of metal