First part of a 2-part system to level, align, space, and hold porcelain tile, marble and stone during installation, Produces 1/16 in. grout joint, up to 1/4 in. when combined with traditional tile spacers, Use with Part B of 2-part LASH system (not included), Use on tiles up to 1/2 in. thick, Small holes allow mortar to disperse evenly to eliminate potential voids, Anchor design keeps tile level throughout installation