For Critical Fitting Of Match-Grade Barrel Top Lugs
Precision, surface-ground file deepens barrel locking lugs without
increasing width. Safe on two sides to let the gunsmith file to a
close fit with no chance of widening lug area. #2 cut, Swiss
pattern cuts smoothly; little or no additional stoning/polishing is
1911, Issue:09, Page:058
Big Book Catalog, Issue:66, Page:144
SPECS: 6" (15.2cm) long. .171" (4.35mm) square.