Quartet Prestige 2 Connects 2-In-1 Eraser, Small & Large, Black (85370) 2-in-1 eraser is both a small and large whiteboard eraser to provide multi-use convenience Use the small and large eraser separately or together. Both have fine bristles to safely and easily remove dry-erase ink and marker dust from any whiteboard surface. Attach the small eraser to the top of the large eraser to serve as a comfort-grip handle for full board erasing Detach the small eraser to use it separately to erase smaller board sections Sized to fit perfectly on the full length accessory tray of Quartet Prestige 2 whiteboard. Replacement eraser pads sold separately.