Improve finger strengthen and dexterity silicone hand grip ring

1.Workout for crushing, pinching and even extension, with amazing results.And have three levels:30LB~50LB,allowing you to 

gradually increase the difficulty of your training as your strength improves.Which set from beginner to professional,relaxation or athletics.

2.It can improve your finger strengthen and dexterity,more forearm Muscularity. So it workout for rehabilitation,long-time typing.