The Silver City Puzzle Box (Self Assembly Kit), made in France by NDK puzzles, is a precise Laser Cut puzzle. Once assembled, it requires 9 movements to unveil the hidden space. Everything is included in the kit (no need to run out to buy glue...). Materials: Poplar plywood. Kit contains: 144 pre-cut pieces assembly instructions glue sandpaper wax Dimensions: 10 x 10 x 10 cm. Suitable for ages 14+