No doubt, the strongest impact socket line around. Sunex Tools impact sockets tackle the toughest jobs with a chrome molybdenum alloy steel grip that won't let go. With solid durability that keeps them driving through job after job, we've got sizes and styles enough to fulfill any need.
CR-MO alloy steel for long life
5/16-Inch hex driver impact socket
Sunex give you the power to make an impact on stubborn fasteners