Klein Tools 66031 3-in-1 Slotted Impact Socket, 12-Point Deep Sockets, Coaxial Spring Loaded, 3/4 and 9/16-Inch Hex Sizes, 1/2-Inch Drive

Impact 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 | Patent pending design