metal assemblies for mounting and securing equipment on walls, ceilings and other surfaces, namely C-clamps, clips, pins, bolts, fasteners, hooks, rings, springs, hanging racks, adjustable brackets, securing frames, safety cables, ceiling and wall vibration isolation adaptors, ceiling and wall plugs, mounting plates, pipe adaptors, thread couplers, strut member kits consisting of two steel structural brackets and two u-clips to allow mounting across up to three studs, and handle kits consisting of knob, spacer and tensioning bolt for repositioning speakers