No-Slip design in forged cro-moly steel grips flats of fasteners not the corners . 1/2″ drive, deep length 6 point impact sockets o Includes: SAE – 7/16″, 1/2″, 9/16″, 5/8″, 11/16″, 3/4″, 13/16″, 7/8″, 15/16″, 1″, 1-1/16″, 1-1/8″, and 1-1/4″ Metric – 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 26, and 27mm Flip Sockets – 3/4″x13/16″ and 19mmx21mm