Fingertip gyro sprocket Sprocket Flywheel Fingertip Toy The sprocket that spins at your fingertips is not only a fun toy, but it also allows you to concentrate. This is also a beautiful decoration and gift. The fingertip rotating sprocket is small and easy to carry. You can use it at home, office and work to concentrate or think. Function: Stay focused, reduce stress, release inner creativity and imagination. The perfect gift for creators, creators and creators. Size 36x60mm Packing: zipper bag 1xtoy