Easy to use Removes broken screws, bolts, and studs without damaging bolt or hole threads. Extractors have round flutes Tempered chrome molybdenum steel. Includes a Plastic Storage Case

• 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
• Sizes:1/8"-1/4", 1/4"-5/16", 5/16"-7/16", 7/16"-9/16" and 9/16"-3/4" (M3-M6, M6-M8, M8-M11, M11-M14, M14-M18)

High quality group of pillar extraction apparatus through our professional Anti clockwise twist design. Broken bolt or screw drill, then extractor insert.Brand new