A tapered wedge shim for traditional "folding wedge" shimming - use two opposing shims to create a parallel plane at the required thickness. Also has a double snapping feature, which allows it to snap both ways at preset break-points. This makes it very useful for retrospective shimming applications - just insert the shim into the gap to be filled, and then snap off. Thickness 3/100 In. greater than 7/20 In.