3D Wooden Puzzle DIY Marble Run Model Educational Crafts Self Assemble

[Easy to Finish]: The mechanical model 3D wooden puzzle is easy to assemble. Challenging and fun, you can enjoy this puzzle with your kids and family, challenging yet enjoyable assembly; [Sturdy and Smooth]: 3D puzzle marble running model are made of environmental wood material with smooth pieces, no burrs, top quality; [3D Marble Run Model]: 3D puzzle DIY marble run model building, unique shape, fun stitching, interlocking assembly, no need tool, enjoy fun; [Mechanical Gear Drive]: This electric mechanical gear drive start, put on steel marbles, they will automatically run in complex tracks; [Nice Gift]: Wooden puzzle marble run a nice gift for craft or Puzzle. Also is a rewarding and fun project for teens and adults to put The creative design and interactive assembly process offer endless DIY fun for puzzle enthusiasts

What's in the box
1 x 3D Puzzles