This 2-Piece Magnetic Nut Driver set from Klein Tools features two of the most frequently used nut driver sizes. They feature full 6-Inch (152 mm) hollow shafts that fit easily over extra-long bolts and studs. The handle end is also color coded to easily identify the nut drivers in a tool bag or pouch.PRODUCT FEATURES:- General purpose selection of the most frequently used nut drivers - Includes two nut drivers (Cat. No. 646-1/4M and 646-5/16M) - Full-hollow shaft design with Rare Earth magnetic tip facilitates work on bolt applications - Handle end is color-coded for easy identification - Internal flanges provide solid, twist-resistant shank anchor - Cushion-Grip handle allows for greater torque and comfort - Color-coded for easy identification