Sutton Screw Extractor (Easy-Out), Number 1, Single. These Screw Extractors are designed to remove broken studs, bolts, socket screws and fittings. Made from Carbon steel these extractors feature a spiral flute which is designed to embed itself deeper, therefore as fastener resistance increases the extractor's grip increases. Helpful Hint: Use recommended Sutton Tools Drill size 2.0 to pre-drill a pilot hole in the broken bolt prior to extracting. Screw/ Bolt size range; Metric- M4 to M5, Imperial- 5/32 to 3/16.