Tombow 57334 Mono Dust Catch Eraser, 1 Pack. Uniquely Designed Eraser Catches Residue for Mess-Free Use Without Damaging Paper Catch eraser dust as you erase with this tacky polymer eraser Eraser residue sticks to the eraser preventing small eraser bits being left behind Prevents damage illustrations, designs or technical drawings Protective paper sleeve with rounded corner edges keeps sleeve from tearing during use