The Bright Ideas Levelling Spacer System is designed for the quick and simple installation of tiles and wooden flooring. This innovative system helps adjust the height of the tiles, aligning them perfectly during the drying process of the tile adhesive ensuring the wall / floor surface is lippage free. Compatible with a variety of different tile types including ceramic, porcelain, natural stone and large format tiles. The extra large levelling clips are recommended for thicker tiles and work exceptionally well for exterior based applications such as laying concrete slabs and outdoor porcelain tiles.