Valeo Quick Adjust Grip Strengthener EASILY ADJUSTABLE: Turn quick-adjust dial to change resistance from 20 to 90 lbs NON-SLIP GRIP: Rubberized handles for maximum grip with stainless steel extension springs. Grooves in the grip provide maximum grip and prevent your hands from slipping HELPS YOU: Improve grip, strengthen hands, wrists & forearms. Excellent for hand strength exercises for people who have Arthritis, Tendonitis, Carpal Tunnel, or for injury rehabilitation IMPROVE PERFORMANCE: Perfect for athletes, fitness and sports enthusiasts, or musicians to develop hand, finger, wrist, or grip strength PORTABLE & LIGHTWEIGHT: Small enough to fit into your bag or pocket, exercise your hand anywhere and anytime