【Premium Material】Made of high quality nylon and ABS, our barbell clamps have a long service life, sturdy and durable and not easy to break, providing you with good protection for your barbell. 【Easy to Use】Quick lock and unlock, just open and close the sliding bar, which can be installed/disassembled easily and quickly. Holds tightly and does not slip. 【Wide Applications】Quick release barbell collar clips are suitable for training, overhead press, weightlifting and other sports. Widely used for home, gym and outdoor activities, etc. 【Package Includes】You will get 4 black quick release clamps. The diameter of each barbell clip is about 30mm(1.18inch), just the right size fits easily.