Craftsman Inch/Metric 12 pc. Nutdriver Set in Zippered Case, # 34555 Set Includes 6 Inch and 6 Metric nut drivers in the most common sizes Each size is color-coded for easy identification Narrow shaft construction allows for easy access to fasteners with limited clearance Includes 1/4", 5/16", 11/32", 3/8", 7/16", 1/2" and 6, 7, 8, 9, 10, and 11mm drivers Includes a folding zippered case for organization, storage and portability.