Century Drill & Tool 7-Piece National Fine Tap & Die Set
Rethreading National Fine Fractional 7-Piece Set includes: 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, and 5/8 In. rethreading dies for repairing damaged bolts or studs. Made from high carbon alloy steel for a long tool life.