For 10 and 12 gauge. Blade angle eliminates chatter; each cut is clean and controlled. Tightly choked 12 gauge barrels may require use of the "D" reamer before using the 10/12 gauge "E" reamer.
SPECS:
Overall dimensions and expansion range as follows: 108 - 4-½" long, .178" sq. shank. .375"-.406". C - 6-5/8" long, .282" sq. shank. .593"-.656". D - 6-7/8" long, .282" sq. shank. .656"-.718". E - 7-1/8" long, .332" sq. shank. .718"-.781". 1" = 25.4mm.
Catalog page 479