5pcs Damaged Nut Screw Extractor Set Bit Bolt Stud Remover Tool Kit 3MM-18MM

Description:
Group of pillar extraction apparatus through our professional Anti clockwise twist design.
Broken bolt or screw drill, then extractor insert
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

Specification:
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)

Package Included:
1 X 5pcs Broken Bolt Screw Extractor Set