Features: 1. You only need to use a hammer to hit the removal tool onto the damaged nut, then select the square drive wrench to loosen the nut counterclockwise to remove these rusted nuts.  2. The plum-shaped internal thread design provides excellent torque and can rotate deep-studded fasteners. The unsmooth concave wall inside is more conducive to the grabbing of the stubborn nut and easy to remove.  3. The damaged lug nut remover is made of high carbon steel (chromium molybdenum steel). Each surface is coated with a black oxide coating designed to increase strength and service life and provide corrosion resistance.  4. 17MM, 19MM, 21MM and 22MM four different size nut extractors and an extra metal rod can meet the various needs of the usual needs, whether it is car repair, home decoration, or craft production, can provide you with Great convenience.     Description: Material: CR-MO;  Size: 17mm, 19mm, 21mm, 22mm;  Square Drive;     Package Included: 4 x Extractor;  1 x Rod;  1 x Box