Size: 10CM*5CM, inner diameter 24mm Color: black, blue, red Material: Silicone Package Contents: 2* Dumbbell Grips 1. Function: Our dumbbell grips can strengthen your strong forearms, upper arms and entire upper body to prevent muscle imbalances and injuries. Barbell grips help you build muscle mass and build strength by increasing muscle stimulation. A barbell grip works by wrapping around a weight (barbell, dumbbell, pull-up bar) and increasing its diameter. A larger diameter will force your arms to grow even more. 2. Standard Size Our thick bar grip standard size fits almost most barbells, suitable for 25mm 28mm 30mm diameter clamps. 3. Our dumbbell grips relieve joint pain by diverting stress, reducing stress and strain on wrists, hands and fingers. Induces greater muscle activation in the arms resulting in incredible size and strength gains. Build strength by lifting weights, lifting weights, or training with a variety of exercises, weights, and barbells, including barbells, dumbbells, and kettlebells. 4. Top bodybuilders use our barbell grips and are used by many: Athletes, Bodybuilders, Warriors, Special Forces Soldiers. Using a thicker diameter barbell results in greater muscle activity in the arms, resulting in incredible size and strength gains. Our dumbbell grips reduce negatively affecting fibromuscular tension so you can pass safely. 5. High-quality material Our dumbbell grip adapters are made of skin-friendly silicone, soft to the touch, durable even under the heaviest weight, and turn every barbell into a real muscle-building machine.