Raimondi Leave-In Tile Spacers, 1/4" (7 mm) 300 pcs Jar 1/4" (7 mm), 300 piece Jar Long and strong - Longer and more rigid than traditional tile spacers No compression - Spacer will not compress under heavy tile load Hollow design - Hollow spacer design allows grout to fill the body of the spacer and hold it firmly in place Stack and snap - 1/4" spacers can be stacked to accommodate thicker tile