<ul><li>Set of extra Toobz and balls for expanding your Air Toobz set</li><li>This expansion pack comes with enough tubes and connectors to double the length of your Air Toobz build, plus 10 extra balls</li><li>Includes 6 transparent 12-inch tubes, 6 transparent orange corner tubes, 12 easy-fit connectors, 10 colorful EVA foam balls</li><li>Encourages spatial reasoning, creativity, experimentation, STEM learning</li><li>Turbine not included, sold separately</li></ul><br><br>

Fat Brain Toys Air Toobz Expansion Pack - Air-Powered STEM Building Toy - Kids & Teens