Suitable for use with 1/2inch drive impact tools. Deep internal threads to grip the locking wheel nut or stripped lock on most vehicles. Thin wall design socket fits wheel lock diameter to prevent scratching wheels. 8 pieces set fits small, medium, large lug nuts and locks. Blackened finish for extra corrosion resistance. Size: 17, 18.5, 20, 21.5, 23, 24.5, 26, 27.5mm. CR-MO material, Impact grade hardened and tempered
