Bear Level 1 Girth Gripz- Fat Bar Grip Strength Trainer Build SLABS Of Muscle! -Girth Gripz will help you add serious muscle to your biceps, triceps and forearms! Level 1 Trainers Are Small Enough To Be Used On EVERY Exercise, But Challenging Enough To Build Muscle And Grip Strength Scientifically Proven By The Concept Of Irradiation- "When one muscle contracts harder, it makes the contraction of the surrounding muscles more powerful as well." AKA "Grip Bigger Stuff And It'll Make Your Arms Grow" Use On Any Bar or Dumbbell- It'll fit, guaranteed. Add or remove in an instant! Virtually Indestructible: Battle tested and proven, these grips will last for years- even with your most brutal workouts.