Sunex 3658 3/8-Inch Drive SAE Universal Hex Bit Driver Impact Socket Set CR-MO alloy steel for long life Packed in blow molded case for convenience 3/8-Inch Drive 7-Piece Universal SAE Hex Bit Driver Set Fully guaranteed Set includes sizes in SAE inches: 3/16, 7/32, 1/4, 5/16, 3/8, 7/16, and 1/2