Steelman Pro 12″ Impact Swivel Extension Socket, 5/16″ 99790 Pinless New As Pictured! * Item was taken out of package for photo. Features and Benefits 6pt. 3/8″ drive socket on 12 inch swivel head extensionPinless joint design transfers maximum torqueProvides a safer alternative to universal joint designsReaches fasteners from a wide variety of anglesNarrow shaft allows access to tight spacesPart Number: 99790 Brand: Steelman ProShip Weight: 2 lbs.