Square Thread Bits cut true 10 tpi, square, barrel threads for '03
Springfields and Enfields. 55° Threading Bits have
offset cutter and are the correct bit when threading barrels for 98
Mausers. 60° Threading Bits have cutter offset to
left for closest cut possible. All types have clearance cuts.
SPECS: ¼" (6.3mm), 5/16" (7.9mm), 3/8" (9.5mm)
square. ¼" (6.3mm) and 5/16" (7.9mm) approximately
2½" (6.4cm) long; 3/8" (9.5mm) approximately 3" (7.6cm)
long.
Catalog page 456