All cases should be case mouth deburred after trimming or neck turning. Tool is double-ended with standard 45 degree flutes that debur/chamfer the inside and outside mouth of the case. Can be used with the Sinclair Deburring Tools Holder (#749-002-628) to attach the tool to a power drill or screwdriver. Will fit case mouths ranging from .17 caliber to .45 caliber, Rifle or Handgun.
1911, Issue:10, Page:067
Big Book Catalog, Issue:67, Page:512
Sinclair, Issue:4B, Page:016