Klein Tools 3-Inch Impact Socket Adapter Set includes 1/4, 3/8, and 1/2-Inch square drive sizes for quick conversion from impact drivers to sockets. The knurled grip provides steady handling, even with oily or gloved hands, while the high-visibility orange band makes it easy to spot in a tool bag or dimly lit jobsites. For more than 160 years, Klein Tools has manufactured premium-quality, professional-grade hand tools that deliver the performance, durability and precision needed to get the job done right. Our family of engineers, workers and craftsman continue to put six generations of expertise into every tool we create by using only the highest quality materials, superior workmanship, and keeping manufacturing as close to home as we can. Klein isn't just the name of our company, it's also our family name. And since we're an American company that's family-owned and family-run, you know you can count on us to be here tomorrow. 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.