Expo Block Eraser 81505 Dry Erase Whiteboard Board Eraser, Soft Pile, 5 1/8 W x 1 1/4 H - Pack of 5 Expo Whiteboard / Dry Erase Board Soft Pile Eraser, 5 1/8-inch Quickly removes marks on any white board, porcelain or melamine surface. Will not scratch.