Easy To Carry,Small,Simple,Discrete and Fun,also effective for Focus and Deep Thoughtu0026nbsp;,SLA technology,laser industrial molding technology,resin materials,accompany you year by yearu0026nbsp;Use This Way: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