Wear-resistant, recyclable. Easy to in DIY operation. Balance tiles in the horizontal position. the installation speed of tile. Reduce the fatigue/pressure of installers. There is hardly any crackless, flat surface. It reduces the need for grinding and polishing. Prevent tiles from moving during solidification. skills: Lay the first tile, leaving a thickness of more than 2mm (with washers). to the tiles. Insert the T-pin along the space between the tiles. Then rotate it 180 degrees and fix the T-shaped pin on the bottom of the two tiles. a hand/special wrench until both tiles are on the level. About 5-6 hours after leveling, before the cement/adhesive is completely dry, rotate the cover in the reverse direction and take out the 180 degree T needle until Name: Steel Needle for Ceramic Tile Leveling System Type: 200 steel needles Colour: silver Material: stainless steel metal Size: 1.3mm thick, 32mm long Package Contents: 200 x steel needle Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.