AMPRO T75935 Multi Spline Screw Extractor Set, 10-Piece 10 Chrome Molybdenum steel extractors Effective for broken screws, bolts, studs or pipes removals SAE sizes are 1/8-Inch, 5/32-Inch, 3/16-Inch, 7/32-Inch, 1/4-Inch, 9/32-Inch, 5/16-Inch, 11/32-Inch, 3/8-Inch, 13/32-Inch