Feature: Wear-resistant resuable. Easy to use for DIY operation. Keep the tile balance on 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. Specification: Material: PP + 430 Stainlss Steel Quantity: 50pcs/Bag x 2 Bags Suitable Spacer: 2mm-8mm Spacer Tile thickness: 5mm-20mm Color: As the picture show Using Tips: Paving the first tile leave more than 2mm (use with cross spacer). Close to the tiles. Insert T-shaped needle along the gaps 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 degree T-needle until the word take out. includes: 100 x Reusable Tile Leveling System