Roto Rasp 115mm Universal Sanding disc for sanding and shaping wood, plastic, rubber Teeth size 2mm Medium cut Steel DC 01 nitrated - Durable and longlasting -can be reused many times International Invention of the year 2013 - British invention show-Barbican-London Does not overheat - Easily installed on angle grinder Fits most of the 4-1/2 inch angle grinders For all types of surfaces - flat,round,slanted,around edges etc