GC - 5pc Mini Diamond Needle File Set 150 Grit - 80 x 1.5 x 35mm For Ceramics Tile GlassUS FASTPER The set of (5) embedded-diamond needle files with round dipped handles. File portions are 1mm to 2mm wide w/ assorted pointed-round,pointed-flat,blunt-flat tips in 150 grit 3 1/8" (80mm) overall length.Round dipped handle with different file shapes Works on all natural materials marble, wood, stone, bone etc. Used in deburing, fixing chipped glass & tile, deling, many hobbies and professional application