Dormer: E547 1"X11 BSPF HSS Staight Flute Machine Tape Tap Straight flute hand tap NO1 with a 6-8xP taper lead MPN: E5471NO1 EAN: 7320760157312 E547 1"X11 BSPF HSS Staight Flute Machine Tape Tap Attributes: Material: HSS