Wear-resistant, reusable. Easy to use for DIY operation. Keep the tile balance in the same horizontal position. Improve tile installation speed. Reduce installer fatigue/stress. Virtually lippage free, flat surface drastically. Reduces the need for grinding and polishing. Prevents tiles from moving while curing. Using Tips: Paving the first tile, leave more than 2mm (use with cross spacer). Close to the tiles. Insert the T-shaped needle along the gap in the tile. Then 180-degree rotation, T-shaped needle stuck at the bottom of the two tiles. Adjust the caps with your hand/special wrench until the two tiles are on the same level. About 5-6 hours after leveling, Before cement/adhesive is completely dry, rotate caps in the reverse direction, remove 180° T-needle until the word, take out. Specifications: Material: PP + 430 Stainlss Steel. Quantity: 50 Sets/Bag + 1Pcs Tool. Suitable Spacer: 2mm-8mm Spacer. Tile thickness: 5mm-20mm. Color: As the picture show. Package Includes: 50 x Reusable Tile Leveling System. 1 x Special Wrench. Why do you select it? The Tile Leveling System improve tile installation speed and reduce installer fatigue/stress. Virtually lippage free, flat surface drastically. Reduce the need for grinding and polishing. Prevent tiles from moving while curing. Re-usable wedges. save your money.