Brownells 3/8'' THREADING BIT,SQUARE 88142-2

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.