Klein Tools' new Pro Folding Hex Key set conveniently consolidates two sets into one. The heavy-duty 11-piece set includes a high-leverage, 4-Inch long 1/2-Inch key. Industrial strength, extended reach blades open independently up to 270 degrees, and a precision fit design to reduce slippage and stripping. The durable handle is made of reinforced nylon with a comfortable grip. The heavy-duty Pro Folding Hex Key set is built specifically for a rigorous job site. 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.