- NATURAL WOOD - Gravity Marble run model is made entirely of wood and requires no glue/toothpicks to be fully assembled. Put together 773 pieces and get a fascinating marble roller coaster! The kit includes 10 glass marbles and an illustrated step-by-step assembly guide. Dimensions: 17.1*16*15.6 inch
- ORIGINAL CONCEPT - What makes this wooden marble run puzzle stand out is its unusual round shape, along with 3 tracks - two on the surface and one inside the puzzle. The roller coaster is powered by an electric motor that runs on 4 AA 1.5V batteries (batteries are not included)
- INTERACTIVE DESIGN - Developed by professional engineers, this model kit for adults is perfect for DIY enthusiasts and marble run fans. Gravity moves the marbles down, while a special mechanism lifts them back to the top, keeping the action going. The varying track speeds and glowing marbles make this puzzle even more thrilling
- HIGH COMPLEXITY - Gravity Marble Run 3D wooden model makes it a real challenge and is recommended for experienced DIY hobbyists. Taking about 9-10 hours to assemble, this engineering kit for adults develops perseverance & fine motor skills
- ENTERTAINING SCIENCE - Curiosity forms the basis for our 3D puzzles for adults. Are you excited about complicated mechanical games? WoodTrick will immerse you in the world of physics and mechanics and show you what's inside
- PERFECT GIFT TO ALL - Our wooden models for adults to build are a nice choice for Christmas holidays, Father’s Day, Valentine’s, Back-to-School and others. Share the real engineering joy of 3D puzzles with your beloved ones
