Klein Tools 66004 2-in-1 Impact Socket, 3/4-Inch and 9/16-Inch Hex, 6-Point Deep Socket Wrench with 1/2-Inch Drive

Single-ended impact socket with hands free adjustment between socket sizes | Two coaxial spring-loaded 3/4-Inch and 9/16-Inch hex sockets in one tool | Deep socket with a 1/2-Inch drive works great for pole hardware installation and removal | High-torque, 6-point design contacts flat sides of hex fasteners reducing round-off | Cross hole design to prevent unintentional separation of adapter and socket | Engineered for use with impact drivers including Klein's 1/2-Inch Compact Impact Wrench (BAT20-CW/BAT20-CW1)