Eleiko Olympic Weightlifting Training Collars are carefully calibrated and IWF certified for training. They feature an attractive chromed metal finish, while distinctive subtle ridges on the surface ensure a secure grip when handling. The collars are easy to operate, simply turn screw fastener to tighten and keep discs in place. A protective inner liner is gentle on equipment and a smart rubber inset prevents collars from “locking up.” The collars are designed for training purposes only and change plates must be loaded INSIDE the collars along with the discs.