About Klein Tools As an American manufacturer of hand tools for more than 160 years, Klein Tools makes premium-quality, professional-grade tools that deliver performance, durability and precision. Our team continues to put six generations of expertise into each tool by using the highest quality materials and superior workmanship. 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. Impact Driver Set, 20-in-1 SAE Impact Rated Sockets and Screwdriver Tool with Phillips, Slotted, Square and Torx Tips The 20-in-1 Impact Driver Set provides the essential screwdriving and nut driving tools all housed within one tool. The versatility provided allows for convenient swapping between the common nut driving sizes and quickly attaches to an impact driver or our 1/4-Inch quick-connect handles. Every component is impact-rated, making it an essential tool for the toughest driving applications. 13 screwdriver bits, 6 nut setter sizes and a 1/4-Inch bit-holder all in one compact tool Impact-rated sockets and screwdriver bits for the toughest driving applications Store screwdriver bits within the handle and flip sockets on the shaft for convenient carry Patented bit holding design allows the 1/4-Inch socket size to drive hex fasteners and hold screwdriver bits Bit tips include #0, #1, #2, #3 Phillips, 1/4, 3/16-Inch Slotted, #1, #2 Square, T10, T15, T20, T25 TORX, #2 Combo and 1/4, 5/16, 3/8, 7/16, 1/2 and 9/16-Inch nut drivers Powerful Rare-Earth magnet to retain bits and hex bolts within sockets TORX is a registered of Acument Intellectual Properties, LLC FEATURES Screwdriving and nut driving tools all housed within one tool Impact rated for use on an impact driver 1/4-Inch quick-connect for use in impact driver or handle