NordWolf 10-Piece Stubby Left Hand Reverse Drill Bit and Screw Extractor Set, M35 Cobalt Reverse Bits with 1/4" Hex Shank, SAE Sizes 5/64"-7/64"-5/32"-1/4"-19/64" in Storage Case

Additional Details from the Manufacturer

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More features

• 【High Quality】M35 Cobalt Steel drill bits and Cr-V steel extractors provides better heat and wear resistance for a stronger and more durable performance
• 【Efficient Design】Stubby version drill bits reduces radial runout, improve concentricity, and avoids being easily broken during drilling. Spiral groove extractors can firmly grip for easy screw out
• 【Popular Sizes】Includes imperial sizes: 5/64", 7/64", 5/32", 1/4", 19/64", corresponding to extractors #1/2/3/4/5. All bits come with 1/4-inch quick change hex shank compatible with drills and impact drivers. Packed in reuseable plastic box
• 【Wide Application】Suitable for automotive repair, home improvement and construction projects to remove rusty, stripped, damaged or broken bolts, studs and screws
• 【Drilling Tips】1) Ensure the extractor is set to left-hand (counter-clockwise) mode. 2) Roughen the head of the broken screw as much as possible with the drill bit. 3) Drill perpendicular to the surface to avoid breaking. 4) With the extractor in left-hand rotation, press down firmly and slowly rotate to remove the broken screw. 5) Only press down to drill after the drill bit has been centered, especially for smaller bit sizes. Pressing down before drill bit is centered can cause it to slip and break.