TUF-FIST Hand Grip Trainer & Strengthener (Set of 2 Rings: 40 lb and 50 lb Weight Resistance) Odor-free, Long-lasting Silicone - For Hand, Forearm, Arm, Bicep, Wrist, Finger - Durable Construction - Use Anywhere, Anytime - Great for Golfers, Lifters, Batters, Swimmers, Fencers, Tennis Players, Cyclists and for Physical Rehabilitation