Main Features:￠ Designed to relieve stress・ anxiety・ ADD and ADHD・ autism・ and focus better. ￠ Eliminate boredom and stop bad habits like nail biting・ pen clicking・ and knuckle cracking.￠ You can spin it in your hand・ put it down and watch it spinning on a table or the floor.￠ Luminous color for wonderful visual effect.￠ Iron bar for longer spinning ( about 100s spin time ).￠ Ultra durable ABS plastic that will not break when dropped.￠ Pocket size to be part of your everyday carry.