Klein Tools 14-in-1 Precision Screwdriver / Nut Driver features 14 of the most common precision sizes in one tool. The Cushion-Grip handle and spin cap provide high levels of comfort and control. Klein Tools 14-in-1 Precision Screwdriver / Nut Driver contains six sizes of integrated steel nut drivers that securely hold four double-ended screwdriver bits. Heat-treated for industrial strength, the precision-milled bits include multiple sizes of slotted, Phillips, and tamperproof TORX® bits.