TIANYI Tile Marker Grout Pen Wall Seam Pen for Tiles Floor Bathroom Decontamination Seam Repair Tool - Beige Fiber tip, waterproof and quick-drying, not easy to fade Anti-mildew, waterproof, moisture-proof, anti-dirty Suitable for blackened tile gaps, blackened corners and gaps, material gaps falling off, etc. Water and light fastness, quick-drying and non-fading, keep the ink color bright and strong coverage Instructions: 1. Clean up the gaps in the tiles for easy coloring. 2. Shake the pen body up and down before use to make the ink in the pen tube evenly mixed. 3. Press the pen tip with your hand for a few seconds and then let go to release the air in the pen tube. 4. Press down the pen for several times until the ink oozes out, and draw a line along the gap 1-2 times with an interval of 1 hour each time. Specifications: Size: 14 x 1.4cm Shell Material: PP Package included: 1 x Tile Marker Grout Pen