Our tile markers contain paints, fillers and adhesives. It can be waterproof, mildew resistant, easy to operate, wear fast drying ink. Its use method is very simple: first clean up the dust in and around the ceramic joint, then open the pen cap, apply the caulking pen evenly in the tile gap, and finally wait a few minutes to let it dry. And can beautify tile, marble, Mosaic and other gaps.