Klein 2-in-1 Impact Socket Set (6-Piece) #66010FEATURES Set includes 12 socket sizes in one carrying case Deep sockets with 1 2 in. drive great for pole hardware Each works with an impact driver Six piece set consisting of the commonly used impact socket sizes used in utility 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. Available in a convenient carrying case.