The UGears Monowheel is an exciting and challenging model to assemble, with 300 laser-cut wooden parts. We have thoughtfully included 19 spare parts in case something gets lost or breaks. The pieces come still attached to the plywood and need to be carefully removed before assembly. Full-color instructions in 11 languages (English, Japanese, German, Spanish, Russian, Polish, Chinese, Korean, Ukrainian, Italian, and French) will help both experienced and novice hobbyists complete this project successfully. You do not need any special tools or adhesive to assemble this model. Simply remove the pieces, follow the instructions, and you are ready to roll.