Sunex 3646 3/8-Inch Drive Stubby Impact Hex Driver SAE and Metric Set, Inch/Metric, 6-Point, Cr-Mo, 1/4-Inch - 3/4-Inch, 6mm - 19, 16-Piece CR-MO alloy steel for long life Packed in blow molded case for convenience Stubby one-Piece design fits into tight areas Fully guaranteed Set Includes SAE sizes: 1/4-Inch, 5/16-Inch, 3/8-Inch, 7/16-Inch, 1/2-Inch, 9/16-Inch, 5/8-Inch and 3/4-Inch and Metric sizes: 6mm, 7mm, 8mm, 10mm, 12mm, 14mm, 17mm, 19mm