[Innovation high quality]:Upgrade T-needles are made of manganese steel, with a better hardness than 304 steel.Updated rotating thread design, no jamming when you rotate it. [Simple time saving]:The new system does not require any tools and has a special wrench. Use a wrench to easily fix or disassemble, reducing the grinding and polishing time after using this tile leveler. Prevent the tiles from moving during curing. In order to increase the installation speed of the tiles and reduce the fatigue/stress of the installer, to avoid unevenness. It solves the problem of floor cracking and provides a flat ground. [Installation Tile Tool]The Tile Leveling System helps DIY and Professional tile layers increase the efficiency of laying tiles and obtain a perfect, lippage-free finish. [Applicable Tiles Specifications]This tile leveling system is suitable for tile gap between 2mm to 6mm, and can be used for 3mm to 17mm thick tiles. It is easy enough to fix or remove with Special wrench. Quantity:50pcs Colour:As Shown Size:As Shown