Western Optical keeps improving on classic tools. The traditional lens turning plier or axis aligning plier is now equipped with either 20mm or 25mm round pads for the entire range of eyesizes. The new style pads also feature matching four base curves to reduce stress on the thin center of high minus lenses. The pads encapsulate the metal mounting bracket and their movement is restricted so there is no opportunity to accidentally scratch lenses. Accommodates lenses up to 90mm in diameter.