【Cool Marble Maze】A challenging model kits to build with 294 pieces and 10 steel marbles. Compatible with all accessories and see-through arcylic tracks. It requires close concentration and patience to assemble. Final built of 12.8x8.4x9 inch.
【Driven by Gears】The 3D puzzle connects different tracks by gear trains, including a waterwheel, flip-flop-splitters, funnels, S-turn and U-turn slides, trap-doors, gradient slides. Just crank the handle and activiate the roller coaster!
【No Glue or Extra Tool Needed】Made of durable plywoods, wood parts are precisely laser-cut and fit well together. The 3D puzzle comes with an easy-to-follow manual and all necessary accessories. Follow the instruction exactly step by step. You'll make it.
【Impressive Gift】Great crafts hobbies for men/women/boys/girls. The 3D wooden puzzle is perfect choice as family time project, birthday gift, anniversary gift, Christmas gift, etc. A bit challenging but really worth your time with grand result.
【Happy Guarantee】If you have any assembly question or need replacement parts, please feel free to tell us. We are glad to help.