... tool, threading tool, machine tap, tap threading tool, threading set Set includes:Two taps of each of the following size:6 ... 4"-28, 5/16"-24, 3/8"-24, 7/16"-20, 1/2"-2017 UNC Taps and Dies: 3mmx0.5, ... 6-32, 8-32, 10-24, 12-24, 1/4"-20, 5/16"-18,3/8"-16, 7/16"-14, 1 ... 4"-28, 5/16"-24, 3/8"-24, 7/16"-20, 1/2"-2017 UNC Taps and Dies: 3mmx0.5, ... 6-32, 8-32, 10-24, 12-24, 1/4"-20, 5/16"-18,3/8"-16, 7/16"-14, 1 ...