Alltrade 640436 7 Pc SAE Long Pattern Combination Wrench Set Includes 3/8 thru 3/4". Extra length for more leverage and torque. Mirror-polished drop forged steel construction. 15 degree offset and chamfered walls for easy mating to fasteners. Boxed end features Z-Drive - contacts flats walls of fasteners for better grip. Meets or exceeds ANSI standards. Lifetime warranty.