3/4" x 14, national pipe taper re-threading die, hexagon die, measures 2" width across hex flats, carbon steel, ideal for repairing damaged threads on plumbing & air applications, & for rethreading where high accuracy & tolerance thread is not critical, recommended for use with hexagon die stock, die can be used with a wrench or socket when space is limited, designed for hand threading work in a variety of materials.