Erases cleanly from whiteboards and will not seep through the page on flipcharts. Markers can be quickly and easily refilled using Maxx Eco 655 cartridges (included.) Ink won’t dry out even if the cap is removed for 2-3 days. Low-odor, free of toluene and xylene. Bullet tip. Kit includes 4 markers, 4 refill cartridges, and eraser. Sustainable product.