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Intricately detailed octopus tentacle shape
A fun twist on traditional puzzles
A striking way to explore and celebrate the diversity of the animal kingdom
natural alternative to diamond
SpringBots 3-In-1 Spring-Powered Machines Costume Intricately detailed octopus tentacle shapeBuild three amazing self powered machinesa motorized robot, race car, and countdown timerall without batteries or electricity! The secret behind these fascinating models is the mainspring, a spiral shaped spring that stores energy when wound up and then releases it to power motion. Watch as the robot marches forward, the race car zooms up to 45 feet, and the countdown timer ticks down for up to six minutes using a clever system of gears, ratchets, and
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