self-defense pendant protective gear silver and black thin steel brass knuckle dusters self defense personal security tools

having a thicker grip will build your forearm strength automatically which will increase the power of your grip a thicker handle boosts your muscle stimulation which translates to bigger muscle mass and strength in your forearms, hands and the entire upper body reduces joint pain by shifting stress off the joints by spreading the weight across a larger surface area and onto the muscles and relieves stress and pressure on wrists, hands, and fingers description material:silica gel color: as picture shown size:3.9*1.9in package included: 1 pc barbell grips package included: 2pc barbell grips