Twelve sizes combined into six sockets including: 1-1/8 x 15/16-Inch, 1 x 13/16-Inch, 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 socket wrenches with hands free adjustment between socket sizes;Two coaxial spring loaded sockets in one tool;Sockets have a high-torque, 12-point design making it easier to position on fasteners;Deep socket with a 1/2-Inch drive works great for pole hardware installation and removal;Cross hole design helps maintain socket connection to adapter or impact wrench