Along with the Proleveling system, Levolution is the only other tile leveling system we carry that offers a cross-spacer The cross spacers are for general stack bond tile patterns where you have a 4-way intersection. In these cases, a single cross spacer replaces 4 flat spacers used in other tile leveling systems, which makes it easier, faster and less expensive to attain a level installation. These spacers are available in 3 sizes ( 1/16", 1/8", 3/16") and are compatible with any tile up to 1/2" thick. Once the mortar is dry the spacer can be completely removed so nothing is left behind in the grout joint. Spacers are sold in bags of 50 spacers.