About the product steel iq kids games physics mind metal puzzles These metal mind brain teasers are a type of mechanical metal ring puzzles that involves disentangling one piece or set of pieces from another piece or set of pieces. The reverse problem of reassembling the metal tangle puzzle can be as hard as—or even harder than—disentanglement. These magic metal puzzles are several different kinds of disentanglement metal mindbender puzzles, though a single metal puzzle may incorporate several of these features. Product Content 1 x Set of 24 pcs metal puzzles bulk