Rotary in Hand with Bearing Rotating DartsFocus Toy EDC Ninja Cosplay Fidget SpinnerGreat For Fidgety Hands, ADD & ADHD SufferersGood for Killing Time,Helps Relieve StressPortable and Fun,great for Focus and Deep ThoughtGender：UnisexMaterial：Alloy/MetalSize：10.5cmColor：GreyHow to Use：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#Bearings #Cosplay #fidgetspinner #focu #ninja #ninjashuriken #rotary #shuriken #stressreduction #stressrelief #Toy