3 1/8" (80mm) overall length; 1 1/2" (35mm) filing surface * Works on all natural materials marble, wood, stone, bone etc. * Soft PVC-dipped handles have excellent grip even when exposed to moisture and fluids * Used in deburing,fixing chipped glass&tile,deling,many hobbies and professional applications * The file portions are 1mm and 2mm wide assorted pointed-round and blunt-flat tips.