Inspired by a college professor who didnt like to hold his eraser and just erased whiteboard mistakes with his finger.

Pictures shown use a styrofoam eraser cut to fit and then taped on to the ring with double sided tape. Anything that works to erase a whiteboard can be taped/glued to the ring and should work.

Can be used on finger tip or as normal ring.

Models are 16 and 17 millimeter diameter