Feature:1. Screw Extractor: Allows for free application on extracting lug nuts, screws and bolts, very practical.2. Various Sizes: Including 10pcs removing socket in different sizes to meet your various work needs.3. Easier Removing: With square slot and strong torsion, the easy removing has no slipping.4. Extra Durability: Through quenching treatment, the chrome vanadium steel is durable and rustproof.5. Red Storage Box: The red storage box will store all the tool in an orderly way to simplify carrying.How to Use:Use with a suitable wrench. Specification:Item Type: Screw ExtractorMaterial: Chrome Vanadium SteelApplication: Broken Nut ExtractorSurface Treatment: Quenching TreatmentColour: BlackSocket Size: Approx. 9mm / 0.4in10mm / 0.4in11mm / 0.4in12mm / 0.5in13mm / 0.5in14mm / 0.6in15mm / 0.6in16mm / 0.6in17mm / 0.7in19mm / 0.7inSquare Slot Size: 3/8in Package List:10 x Screw Extractor1 x Percussion Bar1 x Red Storage Box