tread mobiles building set travel Discover the power of the

Discover the power of the simple lever with the classic Catapult

This five-piece playset includes a soft

or dive in solo LEGO puzzles are a whole new way to play with LEGO bricks

in ascending or descending order

Proudly made in the USA

tread mobiles building set travel Discover the power of theGears, meet treads! Engineer your own twisting, turning creations with this 101 piece STEM building sets colorful moving gears, then add extra fun with attachable rubber treads. Turn your creations into tanks, conveyor belts, and more! Follow along with included builds, or design your own creation. Works with all Gears! sets. Ages 5+