Wearable and recoverable. Easy to carry out DIY operation. Keep the tile balance in the horizontal position. tile installation speed. Reduce fatigue/stress of installers. Almost no slippery, flat surface. Reduce the need for grinding and polishing. Prevent the tiles from moving during curing. Suitable : 2mm-8mm Tile thickness: 5mm-20mm tip: 1. Lay the first tile, leaving a distance of more than 2mm (used with spacers). to the tiles. 2. Insert the T-shaped needle along the tile gap. 3. Then rotate 180 degrees to the T-shaped needle at the bottom of the two tiles. 4. your hand/special wrench to adjust the cover until both tiles are on the level. 5. About 5-6 hours after leveling, before the cement/adhesive is completely dry, rotate the cap in the opposite direction and remove the 180 degree T-shaped needle until the words are taken out. colour:Black+red Material:pp+stainless steel size:67 x 37mm Package Contents: 50 x Tile Levelers 100 x Spacers 1 x Wrench 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.