Ugears Fighter Aircraft 2.5D Mechanical Puzzle ★Mechanical 3D Puzzle Kit Model Toys Gift Present Birthday Xmas Christmas Kids Adults 2.5D Puzzles The Differential is developed to

The Differential is developed to serve as a learning tool rather than a puzzle

and those who enjoy 3D puzzles and lightly-challenging but rewarding DIY projects

It also can work the other way around: blowing air directed at the sails will make them spin

A trigger mechanism just before the return track can send marbles back to the tiered hoist

lightly step on the brakes

Ugears Fighter Aircraft 2.5D Mechanical Puzzle ★Mechanical 3D Puzzle Kit Model Toys Gift Present Birthday Xmas Christmas Kids Adults 2.5D Puzzles The Differential is developed toModel size: 11x9. 6x2. 7 in Package size: 14. 7x6. 7x1. 3 in Number of parts: 47 Level: Easy Assembly Time: 30 minutes Recommended Age: 14+ Kit weight: 0. 88lb or 400gram A great alternative to traditional jigsaw puzzles Ugears proudly introduces the Fighter Aircraft from our Classic Vehicles collectionthe first series in a new line of Ugears 2. 5D puzzles! This cool DIY 2. 5D wooden aircraft model has movable elements and comes in its own frame,