BIC Intensity Low Odor Dry Erase Markers have a versatile chisel tip for both broad strokes and fine lines. The low-odor ink doesn t leave behind a strong smell so you can feel good using them in your classroom or office. They also erase easily and cleanly from dry erase boards so you have a clean slate as you teach plan brainstorm or strategize. The ACMI-approved and non-toxic markers provide smooth ink flow and bright low-odor ink and are suitable for use on dry erase boards glass and most non-porous surfaces.