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 sized tile. 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.