No need to worry about lost hex keys with Klein Tools 5-Key Folding Hex Key Set. This handy tool features five different size hex keys in a convenient folding tool that fits easily into your pocket or tool box. The hex ends are square-cut so they fit securely into hex sockets. 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. The Klein 70579 hex-key set has two key positions for extra leverage. The hex ends are square cut for a secure full-depth fit and maximum contact with the hex socket to prevent slippage and stripping of the socket. The handy set fits in your pocket or tool box easily and help eliminate the lost key problem.