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Description: Safe Material --- Non-toxic water-based ink that helps protect against dark spots and stains, safe for children and pets, Great for the bathroom, kitchen, and any other room that has floor or ceiling tiles Easy to Use --- Shake the pen several times before use, and press down the pen several times until the ink leaks out of the pen, then follow the grout lines to paint Grout Pen --- Instantly restores color to white grout and leaves them looking clean and protected and does not change color for a long time Protective Barrier --- Grouting pen will cover stained seams between tiles and renew the surface after painting, the stubborn grout stains can be refreshed in a safe and easy way Extensive Usage --- Suitable for the cleaning of the groove of window sash, tiny or narrow gaps, floors and walls in home sink, kitchen, showers and bathroom etc. Specification: Size: approx. 140x2mm/5.5x0.08inch Package Includes: 1 Piece Tile Marke