Attributes . Turns Rusted, Frozen, or Other Stubborn Screws; Can Be Used on 3/8 in Square-Drive Impact Sockets; Internal, Spring-Loaded, Helical Design Transforms the Impact of Hammer Blow to pp to 200 ft-lb of Shock Torque; Vinyl Pouch with Hang-up Grommet. in 5/16 in Slotted, 1/2 in Slotted, No. 2 Phillips, and No. 4 Phillips in . Names