1Highly Durable Material: Each bolt remover in this bolt extractor socket is made of high hardness chrome molybdenum steel, boasting excellent durability and a longer lifespan. 2Wide Application: Stripped lug nut extraction remover set can easily remove damaged bolts, nuts and screws, even if they are stripped, rusty, or frozen. 3Reverse Spiral Groove Design: The inner thread of the extractor features a reverse spiral groove design that bites down to provide maximum grip. As you turn, the extraction socket grips tighter, enhancing the extraction process. 4Strong Grip: The more you turn, the stronger the extractor grips. This design means you can remove even the most stubborn of bolts, nuts, and screws with greater ease and efficacy. 5Heavy Duty Design: Standard 3/8in driver and hex adapter make the extractor compatible with common heavy duty power tools and screwdrivers to operate the tool. 1 xSocket Set (14pcs) 1 x Storage Box