Tile Leveling System SGL2-1 Tile Leveling Clips are part of a two part installation system engineered to Level, Align, Space, and Hold large body porcelain tile, marble and stone. The Clip part of the LASH system works by automatically aligning tiles and ensuring the resulting surface is level and free of lippage. The Wedge part of the LASH system (wedges sold separately) works by maintaining the tiles at an even height until the mortar sets. When the installation is complete, the Clips are easily removed by snapping at the base with a light kick and the Wedges separate for reuse. The end result is an installation without tile-to-tile lippage and with evenly spaced grout joints. The system is used by professionals to save time while providing professional results. An installation video is available for more information and a demonstration of this innovative product. Part one of the two part LASH system Ensures tiles are level without lippage Use on tiles up to 13mm thick Produces approximately 1.5 mm grout joint 啊啊啊啊啊啊啊啊 啊啊啊