1/4x20 BSW Left Hand HSS Ground Thread Tap
Specification L/H 1/4X20 High speed steel British Standard Witworth taps Type: Straight Flute Left Hand Cut Option of, see option box: (1st) Taper (2nd) Second (3rd) Bottom leads Set of 3 1/4-20 Part Number ES-4716Visit the JLS Supplies Ltd website for more information on 1/4x20 BSW Left Hand HSS Ground Thread Tap