ROKR handcrafted 260pc Marble Run set full of crazy twists and turns! Build your own intricate system of cogs, gears and wheels, and watch marbles racing down the twisting slides.

Full of elaborate mechanisms and small tricks. The precise gear design, smooth transmission speed ratio. Each gimmick will create dozens of fun to watch. You can learn the fundamentals of engineering and structures of machines.

Highly satisfying and educational building experience. A brilliant way to enhance understanding of STEM principles and improve kids motor skills. This building set will put your visual-spatial skill and patience to the test.

Made of natural plywood. Lasercut wood sheets will well-fit parts. No glue is needed, easy to assemble. Non-Toxic

• For ages 14+
• Assembled size: 25.5cm x 23cm x 20.4cm
• Approximate assembly time is 5hrs