According to Hank Haney — renowned professional golf coach and star of the reality show The Haney Project — grip strength is the most important fundamental in golf. In fact, I can't think of a sport, hobby or pastime that doesn't involve using your hands. But arthritis, carpal tunnel, and just plain age can produce loss of strength, stiffness, and reduced dexterity in your fingers, wrists, and forearms. Well it doesn't have to be that way! Just a few brief minutes a day with GripMaster will rebuild strength, and restore flexibility to muscles and tendons. And like any joint or muscle group, the more you exercise, the stronger you become. GripMaster's individual springs challenge each finger — so you can't cheat! I use mine to maintain strength in my left, fretting-hand for guitar playing — and to add flexibility and strength to my hands and wrists for both golf and tennis. Specify light tension (5 lbs./finger), medium tension (7 lbs./finger), or heavy tension (9 lbs./finger). Includes an exercise pamphlet, and an exclusive DVD featuring Hank Haney teaching you how to use your hands to improve your game.