Hands Craft DIY 3D Wooden Puzzle Music Box for Kids and Adults. Comes with step-by-step, easy to follow assembly guide. Glue and tools included. Average assembly time is between 1-2 Hours. Laser-cut technology makes the wooden puzzle pieces pop out smooth with no burrs or rough edges. Non-Toxic Plywood, 109 piece set. Let’s you enjoy the melody – “UNCHAINED MELODY”.