The Century Drill & Tool Extended Reach Nut Drivers feature an extended reach hollow shaft that allows removal of nuts from protruding studs. The nut drivers are made from chrome vanadium steel for strength and durability, and have ergonomic non-slip handles for comfort and higher torque. Available in sizes: 1/4″, 5/16″, 3/8″, 7/16″, and 1/2″. Also available in a 5-pc set.