QEP 1/4 in. Horseshoe Shim Tile Spacers are ideal for spacing and aligning marble, granite, stone, and large format tile installations. They are engineered to produce a 1/4 in. (6.3 mm) grout joint, and to quickly and easily, space and align horizontal and vertical tile. They are injection molded for dimensional accuracy and do not compress under heavy loads, making them especially helpful in vertical installations. QEP Horseshoe Shims are easy to clean, reusable, and packaged in a convenient recyclable pail containing 75 spacers.