2-IN-1 FELT ERASER. Safe for use on white board, chalkboard, dry erase board and blackboard surfaces. Removes markings quickly and easily from dry-erase surfaces. WIDE APPLICATION. Can be used on black board, calendar, memo, marker boards, and easel. Canvey a clear message to your audience with easy to use felt erase and clean boards. DURABLE. 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. CHALK IT UP. Eraser features sturdy handle. Dense felt delivers excellent chalk absorption, longer life, and cleaning power. Get one eraser that gets hold on multitask to makes your life simple. EXCELLENT DESIGN. Product Measure: 5.5" X 2.1" X 1.7". Compatible with most materials of non porous surfaces: whiteboards, glass, porcelain, and melamine.