Magnetic whiteboard eraser conveniently adheres to any metal-backed whiteboards or steel surface. Cleans up easily with soap and wate. Safe for use on all white board surfaces. Removes markings quickly and easily from dry-erase surfaces. Compatible with most materials: white boards, glass, porcelain, melamine, and other non porous surfaces. Top-quality felt for better erasing and a professional look. Provides a fresh surface for better cleaning. Get long-lasting, high-quality pieces that are non-toxic and easy to erase.