Easy and quick operation: no additional tools are required. When laying tiles, simply place the base in the space and then turn the nut to quickly smooth the tile seams. Until the tiles are completely hardened, unscrew the nuts and the base will break at the breaking point, leaving the joints neat and clean. Strong Applicability: Suitable for tile thickness from 4mm to 16mm, covers almost all specifications of tiles and panels on the market. Reusable: The nuts are reusable and the base can be purchased again after use, to the greatest extent. 100% flat and identical joints: The leveling system ensures even joint widths on walls and floors and avoids additional grinding and polishing work. Material: plastic colour: Transparent + blue Package Contents: 50 x reusable nuts 100 x base(2mm) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.