3D Fantasy Spaceship Puzzle (Super Difficulty)Classic Design: This is a 3D fantasy spaceship model wooden kit that you can build by yourself. The wooden model kit consists of 421 wooden pieces and takes 6 hours to assemble. It is fun and fulfilling to finish. Fine Work: Natural wood with special paper, not easy to fade. The parts are precise and highly matched, modern laser micro carving makes the hull pattern clear. Physical mortise and tenon structure is sturdy and easy to put together.