1. High quality material: These spring clips are made of ABS and high quality steel, are sturdy and durable, refined and processed. The rubber handles allow for a convenient and easy-to-remove procedure. 2. Safe exercise: With the comfortable rubber handles that are easy to install and detach and can also be operated by women with one hand. These barbell collars won't slip during exercise and are super safe to use. 3. Different Sizes: Choose either 25mm, or 28mm barbell collars that suit your needs. Please check the size (diameter) of your rod before ordering. All clips come with rubber end caps for ease of use. 4.Intended Use: Suitable for use at home, in several and all commercial fitness equipment, for men and women who do strength training frequently. Improve your balance, coordination and flexibility. 5.Great for home:This gears compact structure makes it a perfect companion to go with the rest of your home gym equipment. It enables fast weight plate changes and can be used for different plates, including steel, urethane, or rubber-coated plates.