Fidget Spinner Meter, an app for your spinner for Android - APK Download
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Amazon.com: ATESSON Fidget Spinner Toy, 4 to 10 min Spins, Ultra Durable Stainless Steel, Bearing High Speed Precision Metal Material Hand Spinner : Toys & Games
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Sabes a qué Velocidad real gira un Spinner ? / What´s the Real Speed of a Fidget Spinner ? - YouTube