Different sizes: four different sizes: suitable for weight plates with diameters of 24 mm, 25 mm, 28 mm and 30 mm. You can refer to the picture and details page to measure and select the size. If you are not sure about the suitable size of the dumbbell clip, you can ask the seller. High-quality materials: disc stop should also be environmentally friendly. We only produce products that consumers are satisfied with: high quality spring steel, hard and firm, plastic handles, clean and environmentally friendly, safe and secure, easy and quick to assemble and disassemble, which makes it easier to get in shape. Wide range of applications: spring clip is suitable for smooth rods and spiral rods. It can help you adjust your dumbbell weight faster and safer in the gym, strength training and strength training. Easy to use: The grip is firm and the handle is plastic comfortable and flexible makes the spring clip easy to install and remove. Simply attach the zip ties to the workout gear and release.