White-3pcs Grout Pen Waterproof Tile Marker Wall Seam Pen, for Tiles Floor Bathr

SEALED GROUT : Grout pen may not bond to recently sealed grout. If the grout does not absorb the water within a few minutes then the grout was likely sealed. LONG LASTING INK : Tackle small or large DIY projects with a pen that covers up to 150 feet of thin 2-4mm grout.

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