Geo Shape Tack Zap by Haba comes with a wooden hammber, cork board, tacks, 50 colored wooden shapes that are 3 mm thick (3/32"). The wooden shapes all have a small hole in the middle for the tack to go into. Build anything you can dream up! Your design is permanent until you decide to take the figures off and start again! Build all sorts of things like boats and trains, buildings or larger 3-dimensional looking shapes. Direct supervised play is highly recommended.