High Strength Carbon Steel Construction:Made from premium carbon steel with accuracy forging and heat treatments for superior hardness, rust resistance, and durability to withstand extraction tasks 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 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 Engineered for Professional & craft Use:Heat treated alloy ensures high torsional strength to prevent breakage, while the sleek silver finish enhances visibility and usability in any workspaces, Manufacturer: JAMIEKA