This 5-Piece impact socket set features 8 sizes in 4 easy-to-carry sockets, and consists of the most commonly used impact socket sizes used in electrical and construction work. Each impact socket features two coaxial spring-loaded sockets in one. The high-torque, 12-point design is easier to position on fasteners including square ones. Includes a 1/4-Inch hex by 1/2-Inch adapter and convenient carrying case. Eight sizes combined into four sockets including: 7/8 x 11/16-Inch, 3/4 x 9/16-Inch, 5/8 x 7/16-Inch and 1/2 x 3/8-Inch. Single-ended impact sockets with hands free adjustment between socket sizes. 12-point design is easier to position and works with square fasteners. Two coaxial, spring-loaded socket sizes in each tool. 1/4-Inch hex by 1/2-Inch square adapter. Deep socket with 1/2-Inch drive works great for hardware installation and removal. Cross hole design prevents 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). Sockets are color coded to quickly identify sizes. Replacement sockets available (sold separately).