The spinner can used 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. These are perfect pocket pieces for people wanting something small, simple, discrete and fun-also effective for focus, stress relief and deep thought.
Features:

Great For Fidgety Hands, ADD & ADHD Sufferers
Helps Relieve Stress
Perfect size suitable for Adults and kids
Easy To Carry,Small,Simple,Discrete and Fun,also effective for Focus and Deep Thought
Ceramic center bearing,SLA technology,laser industrial molding technology,resin materials,accompany you year by year
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

Specifications:
Material: metal
Color: As Image Shown
Function: Educational toys, interactive toys
Packing: Packed in gift box

What is include:
1X Tri-Spinner Fidgets Toy

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.

• We check the quality of EACH ITEM before we ship out. Quality differs from those who ships right after they get money.
• Spins Last about 5-8 minutes depends on your power For Fidgety Hands, ADD & ADHD Sufferers Helps Relieve Stress ,it's a healthy function of the human mind and body
• Easy To Carry, Small, Simple, Discrete and Fun, also effective for Focus and Deep Thought
• Simple-looking as they may be, these spinning fidget toys are actually backed by science! By feeding your brain extra sensory information, you redirect your mental resources from whatever else you may be thinking to the task at hand. That means it's much easier for you to relax and focus on something else!
• We offer the 100% Satisfaction GUARANTEED! If you are not happy with the fidget toy, let us know! We will do everything in our power to fix the issue.

We check the quality of EACH ITEM before we ship out. Quality differs from those who ships right after they get money.HobbyHere