KD screw extractor kit KD-721

Removes broken studs, set screws, pipe and Alemite fittings.
Drill a hole in the screw and place extractor into hole.
Tap lightly with hammer and turn counterclockwise with tap wrench to remove the screw.
Features undercut flutes for more positive grip.
Set includes the following extractors:

1/4, 5/16″ screw (1/8″ drill, 3/8″ pipe)
3/8″ screw (3/16″ drill, 1/2″ pipe)
7/16″ screw (15/64″ drill, 1/2″ pipe, 1/8″ minimum hole depth)
1/2,9/16″ screw (5/16″ drill, 1/2″ pipe, 1/4″ minimum hole depth)
5/8″ screw (3/8″ drill, 5/8″ pipe, 3/8″ minimum hole depth)