Klein 2-in-1 Penta/Hex Flip Socket with Adapter #66080Easy to use flip feature allows for quick changes between Penta and Hex socket sizes Includes two of the most common socket sizes (13 16 Inch Penta and 3 4 Inch Hex) in one tool 5 Point, 13 16 Inch Penta socket works with security bolts commonly used in underground distribution work 6 Point, 3 4 Inch Hex socket is easier to position Deep well socket with 1 2 Inch drive works great for hardware installation and removal 1 2 to 1 2 Inch square adapter