Features 1.Highly 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. 2.Wide Application: Stripped lug nut extraction remover set can easily remove damaged bolts, nuts and screws, even if they are stripped, rusty, or frozen. 3.Reverse 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. 4.Strong 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. 5.Heavy 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. Specification Item Type: Bolt Nuts Extractor Socket SetMaterial: ChromeMolybdenumSteelSocket Size:3/4in(19mm), 11/16in, 17mm, 5/8in(16mm), 9/16in / (14mm), 13mm,1/2in, 12mm, 7/16in(11mm), 10mm, 3/8in, 5/16in(8mm), 1/4in1 Piece 1/4in Hex Shank Drill Bit Socket Adapter Kit: 3/8in DriveApplication: Used for removing damaged, frozen, rusted, rounded off bolts, nuts and screws Package List 1 x Socket Set (14pcs)1 x Storage Box