The Roto-Wedge Spacer™ is dynamic and easy to use. It is efficient and provides more accuracy than basic wedges, shims, wood or cardboard scraps. The innovative design prevents the installer from hitting the wall, giving you full usage of the wedge. Simply rotate to the exact space you need. The Roto-Wedge Spacer™ is the perfect spacing solution for masonry, stone, tile and more. NO MORE HITTING THE WALL! NO MORE STACKING WEDGES! ELIMINATES ROCK AND CARDBOARD SPACERS! Fast and efficient - Increases productivity Designed to support stone and tile on vertical applications Blue small wedge thickness:1/64 - 1/4" (0.4 - 6.3mm) Ideal for leveling starter courses Great to maintain the gaps between countertop slabs and the wall while it cures Easily create any space for masonry, stone, tile and more 75 per pack.