Jawbones Building Kit - 100-Piece. Construct a functioning model with flexible, moving parts or create a work of art with this unique buildable art system. The precision quality pieces swivel, ratchet and snap together in countless configurations, with engaging ratchet sound. Build a dune buggy, dinosaur, steamroller or one of 11 other fun creations in the included manual...better yet, design your own! 100 pieces with handy storage jar.