Self-piloted Reamer cuts the spring guide tunnel to the proper depth and diameter.
1911, Issue:09, Page:014
Big Book Catalog, Issue:65, Page:097
Sinclair, Issue:1A, Page:014
SPECS: Tool Steel (TS) or Carbide (Carb.) blades. 8" (20cm) long, 7/16" (11.1mm) dia. shank.