Wooden Marble Run 3D Puzzle Kit DIY Mechanical Building Model Design:Climb 2 ft (Sufficient for standard

2 ft (Sufficient for standard set of wheels)

Positioning: Above and below the kneecap

Built to withstand outdoor conditions

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

Dimensions: 23"(L) x 13

Wooden Marble Run 3D Puzzle Kit DIY Mechanical Building Model Design:Climb 2 ft (Sufficient for standard3D 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