KD Screw Extractor Kit (2419D)

KD Gearwrench Tools 2419D 4 Piece Spiral Screw Extractor Set Tap Lightly With Hammer and Turn Counterclockwise With Tap Wrench to Remove the Screw | Spiral Blades Grip Screw | Removes Screws, Broken Studs, Set Screws, Pipe and Alemite Fittings | Drill a Hole in the Screw and Place Extractor Into Hole | Four extractors fit the following: #12 to 5/16″ (screw, bolt or stud size) and 7/64″ (drill size): 5/16″ to 7/16″ (screw, bolt or stud size) and 5/32″ (drill size); 7/16″ to 9/16″ (screw, bolt or stud size) and 1/4″ (drill size); 9/16″ to 3/4″ (screw, bolt or stud size) and 17/64″ (drill size).