Uxcell a13040300ux0079 High Speed Steel 4mm x 0.7mm Taper and Metric Tap 2 Pcs (Pack of 2) Product Name : Taper andMetric Tap ; Flute Teeth Pitch : 0.7mm / 0.27" ; Shank Dia : 4mm / 157" Thread Length : 17mm / 0.748"