STEM WALL 39pcs Gears and Chain Set

ME13460 遊戲牆專用齒輪和鏈條(39pcs)

Each of the gear wheels has a centre bearing, can be meshed together with ease to make long trains that actually work. Length of the chain is adjustable. There are 2 handle gear wheels in each set which allow children to easily rotate. All parts are resistant to fading and cracking from the sun. Ideal for both indoor and outdoor uses.