Hold spinner in one hand and use the other hand to spin it rapidly using small continuous strikes to keep it spinning indefinitely with practice spinners can be spun using one hand only using the fingers of one hand to stop and start spinning. These are perfect pocket pieces for people wanting something small,simple,discrete and fun-also effective for focus,stress relief and deep thought.

Note:
1.Please allows 0.1-0.2 inches error as manual measurement.
2.The color just for reference only,as different monitor,color will slightly different from pictures shown.