Wheel Hub

Two styles: the regular wheel hub style and the hollowed - out wheel hub style. The regular style adopts a closed - spoke design, enabling smooth rotation and producing a clear and loud sound. The hollowed - out style has a uniquely - shaped wheel hub, which highly restores the original appearance and produces a moderate sound that isn't disturbing.

Original design: The original reverse - edge design increases the leverage effect through the reverse edge. The pushing position from the inside to the outside can control the volume, and meanwhile, it highly restores the shape of the wheel hub.

Hollowed out axle hole: It can either install a magnetic - levitation central shaft to make the positioning more stable or be threaded with a lanyard to be played with as a pendant to prevent it from slipping out of the hand.