Klein 3-in-1 Slotted Impact Socket, 12-Point, 3/4 and 9/16-Inch #66031Impact socket features an alignment slot to tighten and loosen most hot line clamps Single ended impact socket with hands free adjustment between socket sizes Two common socket sizes (3 4 Inch and 9 16 Inch hex) in one tool High torque, 12 Point design is easier to position and works with square fasteners Cross hole design to prevent unintentional separation of adapter and socket Engineered for use with impact tools including Klein Tools compact