Keepafit Finger Exerciser & Hand Strengthener (3 Pack(Light+Medium+Heavy))Brand: Keepafit Color: Blue Features: THERAPEUTIC. Works as a hand therapy ball and stretcher. Excellent for conditioning the extensor muscles of the hands. Great for preventing hand fatigue, arthritis, strain, and early signs of carpal tunnel. 3 TENSION Avaiable. Light Tension, color coded pink, ideal for starters or rehab. Medium tension, color coded orange, ideal for maintenance of already strong hands and Heavy tension, color coded blue, for