2X Stress Relief Squeeze Ball HAND EXERCISE Iron Ball - Hand Grip Finger Therapy While rolling on your hand it can help to relief your stiffness and relax your entire hand just like a finger THERAPY Reliefs your muscle and joint all together. The ball is 1 1/2" diameter It is bigger than what's been selling on the market. A pair of 8 oz Hold 2 with 1 hand and rotate in your palm! This set comes with 2 balls. Case color might be different!