1/4 Hex, 1/4 Hex Drive Magnetic Bit Holder Price For: Each Bit Type: Magnetic Bit Holder Hex Size (Inch): 1/4 Drive Size: 1/4 Hex Overall Length (Inch): 2-31/32 Nose Diameter (Inch): 7/16 Body Diameter (Inch): 7/16 Addition Information: Bit Holder Apex Reference Number: M-490