METAL HARDWARE, NAMELY, METAL CLIPS, CLAMPS, AND HOOKS FOR FIXING METAL DUCTS ON A SUPPORT BRACKET; METAL CLIPS AND HOOKS FOR FIXING METAL WIRES ON A SUPPORT BRACKET; METAL CLIPS AND HOOKS FOR FIXING CABLE TRAYS AND WIRE MESH TRAYS INTENDED TO RECEIVE ELECTRIC CABLES OF ALL TYPES, TELEPHONE AND COMPUTER CABLES, AND OPTICAL FIBERS OR CABLES