The electroplated diamond needle file set is used by metal workers for precise filing on stone, metal, glass and sculptures. They are also ideal for delicate filing, shaping and creating inside cuts. Files are electroplated uniformly using 150# – 240# diamond grit offering high grade cuts. Different 10 file shapes included in this sets offer a variety on use for different applications: Equaling, Half-round, Triangle, Square, Round, Warding, Crossing, Knife, Barrette and Slitting. Size : 4 x 160 mm.