Wooden Marble Run 3D Puzzle Kit DIY Mechanical Building Model Design:Climb EXTENDS 12 TO 53 INCHES:

EXTENDS 12 TO 53 INCHES: Three steel rods snap together so you can reach high windows without climbing ladders

2 ft (Sufficient for standard set of wheels)

Built to withstand outdoor conditions

Design: Thick Bottom

The recommended viewing distance is between 0

Wooden Marble Run 3D Puzzle Kit DIY Mechanical Building Model Design:Climb EXTENDS 12 TO 53 INCHES:3D Wooden Marble Puzzle with Gears and Gravity Powered Motion Take a break from screens and build something with your hands. Assemble the wooden pieces, watch the gears spin, and follow marbles as they travel through loops, tracks, and ramps. You snap wooden pieces together following the picture guide until the gears, tracks, and supports lock in. Crank the handle to wind it up, then let go and watch marbles roll through loops and slides as the gears