Barrel Threading Lathe Bits - 3/8'''' Threading Bit,Square

Square Thread Bits cut true 10 tpi, square, barrel threads for '03 Springfields and Enfields. 55deg Threading Bits have offset cutter and are the correct bit when threading barrels for 98 Mausers. 60deg Threading Bits have cutter offset to left for closest cut possible. All types have clearance cuts. Mfg: Brownells SPECS: A 1/4'''' (6.3mm), 5/16'''' (7.9mm), 3/8'''' (9.5mm) square. A 1/4'''' (6.3mm) and 5/16'''' (7.9mm) approximately 2A 1/2'''' (6.4cm) long; 3/8'''' (9.5mm) approximately 3'''' (7.6cm) long.