Adapt and evolve your ideas with ease using EXPO Wet Erase Markers. These EXPO markers are permanent until you want it gone; with water-activated erasing technology they wipe clean with water when you're ready for a fresh start! These markers make vibrant, sharp marks and are perfect for capturing plans that last, labeling with flair, or creating colorful displays on glass, whiteboards, and other non-porous surfaces. Marker Ink Type: Wet Erase; Marker Tip Type: Needle; Marker Tip Size (text): Ultra Fine; Marker Tip Size (numeric): 0.6 mm.