Quartet Dry Erase Markers, EnduraGlide, Fine Tip, BOLD COLOR, Assorted COLOR, 4 Pack (5001-17M) EnduraGlide dry erase markers always deliver strong, bold color; low-odor non-toxic ink is safe and easy to use; ideal for use on whiteboards and nonporous surfaces Fine tip marker point is ideal for handwriting or detailed drawings; assorted colors, 4 pack See-through ink gauge shows exactly how much ink is left; ink sent straight to nib from 3 separate chambers, ensuring constant ink flow; roll-resistant cap prevents markers from drifting out of sight