The Klein 32537 10-Fold 10-in-1 Torx Tamperproof Screwdriver/Nut Driver incorporates a patented Tip-Ident that quickly identifies the type of screwdriver and screwdriver tip orientation. The Torx Tamperproof Screwdriver/Nut Driver‘s Cushion-Grip handle allows for greater torque and comfort. Premium chrome plated and Special heat-treated shafts create a smooth feel and promote corrosion resistance. Internal flanges inside handle provide solid, twist-resistant blade anchor. Blast finish steel bits provide a firm hold to the fastener to reduce cam-out. This Folding pocket-style 10-in-1 tool includes interchangeable bits, 8 screwdriver sizes and 2 nut drivers. Unfolds and locks at a 180-Degree angle to provide a straight screwdriver. The 32537 features Precision-machined tips for exact fit. This 10-in-1 tool Contains a 5/16-Inch and 1/4-Inch nut drivers, T7, T8, T9, T10, T15, T20, T25 and T27 TORX. Meets or exceeds applicable ASME / ANSI specifications. TORX is a registered trademark of Acument Intellectual Properties, LLC. Since 1857, Klein Tools has manufactured the world's finest hand tools. Today, Klein Tools is the 1 choice among professional tradesmen. We manufacture more than 3,000 tools and accessories, including pliers, cable and bolt cutters, wire strippers, voice-data-video tools and testers, fish tapes, conduit benders, drill bits, insulated tools, gloves and many other high-quality products. Klein Tools' dedication to quality and innovation continues with products available for professional tradesmen worldwide.