Description: Easy to use Removes broken screws, bolts, and studs without damaging bolt or hole threads. Extractors have round flutes High quality group of pillar extraction apparatus through our professional Anti clockwise twist design. Broken bolt or screw drill, then extractor insert. Material:hard alloy steel Extractors 3 -6, 6 -8, 8 -11, 11 -14, 14 -18 and 18 -25mm Metric Equivalent to 1/8 -1/4, 1/4 -5/16, 5/16 -7/16, 7/16 -9/16, 9/16 -3/4, and 3/4 -1" Imperial Drill bits: 3/32, 1/8, 3/16, 1/4, 5/16, 3/8. Material: carbon steel Package Includes: 6Pieces Screw Extractor 6Pieces Drills Bits
