Rethreading tools are color marked for fast identification.SAE coarse dies size:1/4"-20,5/16"-18,3/8"-16,7/16"-14,1/2"-13,9/16-12,5/8"-11. fine dies sizes:1/4"-28,5/16"-24,3/8"-24,7/16"-20,1/2"-20,9/16"-18,5/8"-18.
49-Piece Thread Chaser Set, UNC UNF Metric Thread Repair Kit with Taps, Dies...
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49-Piece Thread Chaser Set - UNC UNF Metric Repair Kit with Taps, Dies & Files
