Klein Tools has expanded its Insulated Nut Driver product line to include nine new insulated Nut Drivers with six in. long shafts, as well as two new nine-piece Nut Driver kits available in either six in. shafts or in three in. and four in. shafts. Like all Klein nut drivers, the six in. Insulated Nut Drivers have a full hollow shaft that allows for work on long bolt applications, allowing full engagement with the nut to hold fasteners securely in place.