This side magnetic whiteboard eraser performs on all dry erase surfaces and erases any dry erase marker ink. Great for use on all melamine painted steel porcelain glass and other dry erase board surfaces. The modern 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 as well. Great for use with any magnetic dry erase board as the white board eraser includes a magnetic feature which enables the eraser to be adhered right onto any magnetic dry erase surface. This eraser has a side magnetic feature which offers a stronger magnet while saving space on smaller dry erase boards and is equipped with thicker felt for better function and performance. The side magnetic feature helps keep dry erase residue from building up over time which helps extend the life of your eraser. The thick felt 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 and more!