Water-based pigment marker (fine line) that can be written on metal, glass, plastic, etc. Line width 0.9-1.3mm Popular Pop-markers for exceptional writing ease Vibrant as a poster color. When dry, it will not run into water and is highly water resistant. Can be stacked. No smearing, no greasing, no unpleasant smell. Color: White; Shaft Material: Polypropylene; Pen Core: Sliver (polyester); Line Width: 0.04 - 0.05 inches (0.9 - 1.3 mm); Fine Point, Round Core