Playable Metal blocks are made in aluminum alloy. There are 10 different shapes each with threaded holes on many of its facets. Blocks can be interconnected using specially designed screws. This patented connecting mechanism makes building flexible structures possible for each two adjacent blocks can be secured in any easily adjusted angle. Playable Metal blocks are available in 7 metallic colors. This set includes, 22 playable metal blocks, 39 connecting screws, 6 aluminum rods, 2 special rods (sports pack), L-shaped wrench.