Socket Set 1/4 inch Drive Imperial 9pce 3/16 inch1/2 inchOverviewChrome vanadium square drive imperial hex sockets. Contents: 3/16 inch, 7/32 inch, 1/4 inch, 9/32 inch, 5/16 inch, 11/32 inch, 3/8 inch, 7/16 inch and 1/2 inch AF. Loops 9 Piece Socket Set 3/6 Inch 1/2" Chrome Vanadium Square ¼" Imperial Driver