MaterialThe dumbbell clips are made of sturdy ABS plastic and spring steel. Not easy to rust, wear, corrode, durable. It provides stable and firm support for your weight lifting bar. Easy to useThe dumbbell clips can firmly clamp the weight plate when lifting weights. When adjusting weights, hold the dumbbell clips to easily slide from side to side for more efficient fitness. Easy to InstallSimply press the spring loaded lock on the exercise machine and release. Make sure you have a firm grip so the bumper stays in place and doesn't slip. Convenient plastic handle helps you install and easy to remove, and women can also use it with one hand. Wide UseMulti-functional dumbbell clip. Fits all typical barbell bars. For weightlifting, fitness, strength training, muscle building, triceps exercise machine and more. Prevent the slab from slide off the railing. Applicable peopleSuitable for men and women who regularly perform strength training to improve balance, coordination and flexibility.