Heighten Model-This tile levelers have a hole of 28mm/1.1in high and 23mm/0.91in wide, suitable for tiles with a thickness of 15-23mm.Kind Reminder:Only spacers kit, doesn't include wedges New Material Tile Spacers 3mm- The 3mm tile leveling spacers are made of new material (non-secondary recycled material), environmentally friendly, non-toxic, high toughness, breakpoint design, to achieve uniform breakage from the root. Breakpoint Design- The root of the 3mm tiling clips adopt a breakpoint design to achieve uniform disconnection from the root, which can greatly reduce the workload used in cleaning up the residues inside the tiles. Does not Affect the Grout Line- The tiling spacers levellers are one-time use, the part of the clip broken after the tile is fixed is only 1-2mm, which does not affect the grout line. Wide Range of Applications- This set porcelain spacers for 20mm tiles widely used in indoor, outdoor courtyard, large plaza, such as marble and rock slabs thicker tile paving., Manufacturer: Satisby