Klein Tools 32535 10-Fold 10-in-1 Screwdriver/Nut Driver Folding pocket-style 10-in-1 tool with interchangeable bits - 8 screwdriver sizes and 2 nut drivers Unfolds and locks at a 180-degree angle to provide a straight screwdriver Blast finish steel bits provide a firm hold to the fastener to reduce cam-out Contains 5/16-Inch and 1/4-Inch nut drivers, #1 and #2 Phillips, 1/4-Inch and 3/16-Inch slotted, T10 and T15 TORX, and #1 and #2 square-recess bits Klein Tools doesn't just make great products, we make great products that stand up to the demands of the professionals who use them every day ... Since 1857