As the grip's getting thicker, more muscle fibers are used; you can build more grip strength, develop powerful massive forearm, upper arms and whole upper body faster, and prevent muscle imbalance and injury. They also help you to ease the stress on shoulder joints, elbow and hand wrists during workout.
These fat grips are designed to fit on most bars and dumbbells on the market. Both use them for chin, pull-ups, rows, benching, deadlifts or any exercises using barbell, dumbbell, pull up and push up bar to add new variations to arm exercises.

Some of the Benefits You Get: 
1. Recruit More Muscle Fibers in the Upper Body 
2. Increase Finger, Hand, Forearms and Arms Strength and Size 
3. Less Imbalances and Injuries 
4. Natural Movement