Designed for superior performance and extra strength for Heavy Duty applications|2-set screw locking position head and knurled handle with a minimum rating on the 3/4" Drive of 1000 ft. lbs. and 1833 ft. lbs. on the 1" Drive|Forged and machined for best fit and unyielding strength|Precision heat-treated and tempered for optimal hardness, ductility and durability|Easy to read stamp pattern in order to quickly determine opening size