Each 3-In-1 Impact Flip Socket Allows For Quick Switching Between Drive Sizes. For Use On An Impact Driver, These Versatile Sockets Include Three Hex Sizes: 5/16-Inch, 1/4-Inch Shallow (Driver) and 1/4-Inch Deep (Bit Holder). Rare-Earth Magnet Holds Bits and Hex Head Fasteners. Set Includes 3-Inch and 5-Inch (8 and 13 CM) Length Blades That Will, Also, Fit Klein Tools Screwdriver Handles (Cat. Nos. 32303, 32304, or 32308).