pMARXMAN Hand Tap Set, Straight Flute, Series 110, Measurement System Imperial, 3 Piece, 91618 Size, GroundUNF Thread Standard, 12132 in Thread Length, 31932 in Overall Length, 4 Flutes, Right Hand Cutting Direction, BottomingPlugTaper Chamfer, H3 Thread Limit, HSS, Brightp.