U Brands bullet tip liquid glass markers feature bold and vibrant color inks that dry quickly, erase easily and work great on any glass board surface. The markers also feature the longest lasting, non-toxic, low odor ink that is great in any classroom, home or office environment. The glass markers feature a bullet tip for a bold and precise writing experience. Each marker cap features a built-in eraser which enables quick, convenient and precise erasing. For best results, re-cap the marker immediately after use and store horizontally.