Reverse Thread Design for Secure Grip: Features reverse fine threaded teeth that tightly grip ruptured or ruptured screws, ensuring without slippage and effortless removal even from stubborn bolts High Strength Carbon Steel Construction: Made from premium carbon steel with accuracy forging and heat for hardness, rust resistance, and durability to withstand tough tasks Engineered for Professional & craft Use: Heat treated alloy ensures high torsional strength to breakage, while the silver finish enhances visibility and usability in any workspaces hexagonal Shank Compatibility: 1 / 4 " hexagonal shank design fits most electric drills, ratchets wrenches, and impacts driver without adapters, offering quick setup and versatile tool integration Multi Size set for Various Needs: Includes 5 different sized extractors to handle a wide ranges of screw dimensions, making it ideal for home repairs, automotive maintenance, and machinery servicing, Manufacturer: TFAOYS