Hollow Shank Nut Drivers Set, 14 Pc. SAE / Metric, Soft Grip Handles Hollow Shank Nut Drivers Set, 14 pc. SAE / Metric, Soft Grip Handles Nut driver set contains one each standard sizes- 3/16", 1/4", 5/16", 11/32", 3/8", 7/16" and 1/2". And one each metric sizes- 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm Nut Drivers. Hollow shank nut drivers set with comfortable soft grip handles, quality construction. Hollow shank allows for use on nuts with protruding bolts etc.