Some jobs require specialized miniature drills to accomplish specific tasks such as working with jewelry, clocks or models.
Miniature Drills page 24
Wire Gauge Sizes (Straight Shank) #81 To #97 Diameter.
SIZE DEC. EQUIV FLUTE LENGTH OVERALL LENGTH
#81 .0130 .104 3/4
#82 .0125 .100 3/4
#83 .0120 .096 3/4
#84 .0115 .092 3/4
#85 .0110 .088 3/4
#86 .0105 .084 3/4
#87 .0100 .080 3/4
#88 .0095 .076 3/4
#89 .0091 .073 3/4
#90 .0087 .070 3/4
#91 .0083 .066 3/4
#92 .0079 .063 3/4
#93 .0075 .060 3/4
#94 .0071 .057 3/4
#95 .0067 .054 3/4
#96 .0063 .051 3/4