1、This lug nut socket set is made from quality chromium molybdenum steel material, the perfect tool set for nut removal. 2、This lug nut socket set can be applied to quickly remove worn lock nuts, including rust, deformation, peeling or breaking, and car wheel hubs. 3、Plum shaped internal thread design provides excellent torsion for easy and convenient fastening. 4、The unique internal texture makes it easier to hold on to the stubborn nut for easy and efficient removal. 5、This lug nut socket set has black oxidation surface which provides high hardness and high durability. 4 x Nut Extractor1 x Straight Bar1 x Blue Storage Box Item Type: Lug Nut Socket SetMaterial: Chromium Molybdenum SteelPurpose: Nut ExtractorColor: Black and SilverSystem: MetricDrive Size: 1/2inchSleeve Size: Approx. 22mm / 0.86in, 21mm / 0.82in, 19mm / 0.74in, 17mm / 0.66in