... threading tool, threading set Set includes:Two taps of each of the following size:6 UNF Taps and Dies: 10-32,1/4 ... "-28, 5/16"-24, 3/8"-24, 7/16"-20, 1/2"-2017 UNC Taps ... NPT. One die of each of the following size:6 UNF Taps and Dies: 10-32,1/4"-28, 5/16"-24 ... , 3/8"-24, 7/16"-20, 1/2"-2017 UNC Taps and Dies: 3mmx0.5, 4mmx0.7, 5mmx0.8, 6mmx1, 8mmx1 ...