This ROKR 3D wooden puzzle music box kit comes with pre-cut plywood. Wooden materials are non-toxic, safe, and smooth. After finished, it can play the tunes when you turn the T-Key on the bottom of the music box. This DIY self-assembly music box can promote hand-eye coordination, enhance imagination and creativity, can make people relieve stress and relax. The clearly illustrated English instructions can help you assemble this model kit easily. Just follow it step by step, easy to compete. All you need comes in the package. Please note: To make this music box rotate smoothly, a lot of wax is needed during assembly. Birthday candles can be added if it is not enough. This craft kit is a fun project, that can build harmonious family relationships. Bring much fun and happiness. This 3D puzzle kit can be a simple desk decoration. You can display it in your office or bedroom. It can be given to friends, lovers, and family as a Birthday/Christmas gift.