INSIZE Outside Micrometer Set 6-12" Features include... 6-12" Measuring Range 0.0001" Graduations Carbide Measuring Faces 0.256" Spindle Diameter Ratchet Stop Spindle Lock Furnished in fitted Case Included in this set... 6-7" Micrometer with Standard 7-8" Micrometer with Standard 8-9" Micrometer with Standard 9-10" Micrometer with Standard 10-11" Micrometer with Standard 11-12"" Micrometer with Standard