Product InformationDumbbell handles made of high quality TPE, soft and durable, non-slip surface for extra grip. Stay away from cheap foam handles that compress and break easily. Product AdvantagesAs the diameter of the rod is increased (the diameter of the mat is 5 cm), a larger grip is needed, activate more muscle fibers in the upper body, especially in your arms, resulting in higher strength and more muscle mass. Easy to use: Easy to use and remove. Transform any barbell in seconds. 1. Spread the grips, 2. Attach them to the bar. That was it. Training with a thick rod is so easy! And they don't slip easily. Like a vice: the bigger the grip, the stronger To increase muscle mass and strength: You can attach them to any barbell, dumbbell, pull-up bar, chin-up and pull-up bar, cable or any other bar for a thicker barbell workout. Ideal for athletes who want to strengthen their grip strength. Easy to carryLightweight and small, portable, easy to carry in the gym bag. Ergonomic design. Fits in the hands and palm. Ensures less stress on the joints, less injuries, less imbalances and more muscle fibers. Note: The data are all measured manually, please allow an error of 1-3 cm due to differences in light and display, there may be color differences, please refer to the actual item received.