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: 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.