630716 Klein Tools Nut Driver,Hex Size: 7/16",Hollow shaft,3"Shank,7-5/16",Brown Please log in to see price or purchase this item Quantity discounts available QuantityPrice SKU: KLT630716 Qty On Cart Features Cushion Grip Nut Drivers have hollow shafts and fit over long bolts and studs. Features Back FeaturesCushion Grip Nut Drivers have hollow shafts and fit over long bolts and studs.