Square Drive Hex Bit Socket Set with Square Key - 1/4 Inch, 3/8 Inch, 1/2 Inch Automotive Maintenance Tools with Toolbox

Specification: Item Type: Square Key Hex Bit Socket Set Size: 1/4 Inch Square Key Interface: Approx. 2 mm / 0.08 inch, 2.5 mm / 0.1 inch, 1/4 inch / 0.12 inch, 4 mm / 0.16 inch, 5 mm / 0.2 inch, 5.5 mm / 0.22 inch, 6 mm / 0.2 inch (37 mm / 1.5 inch long) 3/8 Inch Square Key Interface: Approx. 7 mm / 0.3 inch, 8 mm / 0.3 inch, 9 mm / 0.4 inch, 10 mm / 0.4 inch, 12 mm / 0.5 inch (48 mm / 1.9 inch long) 1/2 Inch Square Key Interface: Approx. 14 mm / 0.6 inches (55 mm / 2.2 inches long) Applies to: 1/4 inch, 3/8 inch, 1/2 inch Square/Jackhammer/Power Rod Interface Application: Household, Automotive Instructions Package List 13 x Square/Hex Bits 1 x Blue Tool Box Note Please allow a 0-1/2" error due to manual measurement. Thank you for your understanding.