6 Metal trusses, namely, square truss comprised of straight segments, corner junctions, cross and T-junctions, circular arcs, and constructors; triangular metal truss comprised of straight segments, corner junctions, cross and T-junctions, circular arcs, and constructors; mini-triangular metal truss comprised of straight segments, corner junctions, and circular arcs; and I-beam metal truss comprised of straight segments, corner junctions, cross and T-junctions, circular arcs, and constructors; straight metal tube segments of metal trusses; truss accessories, namely, metal clamps, metal truss couplers, metal base plates, metal spacers, and metal hinges; truss accessories, namely, metal support bars for supporting truss structures, metal truss outriggers, metal truss stabilizers, and metal ground support sleeves for holding and stabilizing metal trusses; truss accessories, namely, metal mounts for flat panel televisions; metal truss accessories, namely, portable metal stages for musical performance, stairs, and guard rails; Metal truss accessories, namely, truss delay towers for supporting metal trusses