1. High quality material:: These spring clips are made of high quality ABS and steel, sturdy and durable, refined and processed. Rubber grips allow for a convenient and easy removal procedure. 2. Safe Exercise:: With the comfortable rubber grips which are easy to install and detach and can also be used by women with one hand. These dumbbell collars do not slip during exercise and are very safe to use. 3. Different sizes: : Choose 25mm or 28mm dumbbell collars that meet your needs. Please check your rod size (diameter) before ordering. All clips come with rubber tips for easy use. 4. Intended use:: Suitable for use at home, in many and all commercial fitness equipment, for men and women who do frequent strength training. Improve your balance, coordination and flexibility. 5.Ideal for the home: : The compact structure of this piece of equipment makes it an ideal companion to accompany the rest of your home gym equipment. It allows for quick weight plate changes and can be used for different plates including steel, urethane or rubber plates.