Our grout paint pen is a simple and convenient solution for restoring and updating grout lines. The grout marker is suitable for use on all types of tiles, including ceramic, porcelain, and natural stone. Tile grout pen is used for bathrooms, kitchens, balconies, living rooms, bedrooms, and other high-moisture areas. Specification Color: Black, Yellow, Grey, White, Beige, Dark Brown, Khaki, Dark Grey, Brown, Golden, Silver Ink Material: Paint Overall Dimensions: 138 x 14 mm / 5.4 x 0.6 inch (L*W) Nib Width: 4 mm / 0.2 inch Packing List: 4pcs x Grout Paint Pens Advantages Long-lasting results: The grout shine pen is made of a quality, water-based formula that provides long-lasting and durable results, ensuring your grout lines look clean and new. Multiple colors: You can choose a different color to match your grout color and create a seamless and natural look. Comfortable use: Our grout pens feature a precision tip that allows you to apply the pen exactly where it's needed, ensuring a neat and clean finish every time. The pen is also designed with an easy-to-hold grip, making it comfortable to use for extended periods. Instruction Easy to use: Simply shake and press the pen tip to dispense the grout paint, and apply it evenly along the grout lines for a fresh and clean look. The pen is quick-drying, so you can use your tiles immediately after applying the pen. NOTE: Ensure that the grout lines are clean and free from any debris or dirt before using the pen. This will ensure that the pen adheres properly to the grout and that the color is even. Apply the pen along the grout lines in a smooth, continuous motion, being careful not to press too hard.