Use over 2x2mm or smaller crimps. These high quality, sturdy crimp covers are made from .925 sterling silver. Unlike many crimp cover brands that are merely plated silver or gold over brass or steel, our solid silver crimps fold more easily into place. Crimp covers are part of the 1-2-3 secret to crafting beaded wire, cord, or chain jewelry with elegant, apparently effortless finishing touches. Used with crimps and wire guards, they conceal even damaged or unsightly crimps, add an extra form of safety lock at the ends of beading lines, and lend a glimmer of precious metal to beaded jewelry designs.