This fun & soft whiteboard eraser performs on all dry erase surfaces & erases any dry erase marker ink. Great for use on all melamine, painted steel, porcelain, glass & other dry erase board surfaces. The fun contoured design fits comfortably in the palm of your hand for extremely precise erasing, as well as quickly wiping away all dry erase ink on large writing surfaces. Microfiber bottom surface of the eraser glides smoothly on any dry erase board surface, without damaging the writing surface. Great for use in any office, classroom, meeting room, board room & more! Board Eraser Application: All Dry Erase; Eraser Pad Material: Microfiber; Eraser Width: 3.75"; Eraser Depth: 9.75".