Standard Pack = 1 piece(s). Class=High Performance Taps; Class of Fit=D5; Coating=2% Vanadium; For Use With=Steel; Material=High Speed Steel; Number of Flutes=3; Overall Length=4-15/32 IN ; Type=Spiral Point Tap; Size=M20x1.5; Thread Length=1.201 IN ; Size Type=Metric; Special Feature=General Purpose - Blue Band;