The Starrett 185 Time Saver and Drill Gage provides correct sizing of a tap drill for any commonly sized machine screw tap in NF National Fine or NC National Coarse Thread Series. This tap and drill gage has a black matte finish with information steel stamped on one side and white marked on the reverse side for quick, clear reading. Nos. 1 to 60 and .228 to .040".

Leaves the right amount of stock for approximately 65% full thread
Shows correct drill body size
60 holes with number sizes and decimal equivalents
Black matte finish with information steel stamped on one side and white marked on the reverse side for quick, clear reading
Thoroughly tested for accuracy and hardening
Approximately 5/64" thick by 2-5/16" wide by 6-1/4" long