Klein Tools 70553 3-Piece Pro Folding Hex Key Set, Metric, SAE, Torx Sizes, 31 Keys, Industrial Strength Heat Treated Alloy Steel

• EXTENDED REACH: Extra-long blades extending from 3-1/2-Inch to 4-1/2-Inch for greater reach and leverage
• 31 HEX KEY SIZES: Set includes 3/32, 7/64, 1/8, 9/64, 5/32, 3/16, 7/32, 1/4, 5/16, 3/8, 1/2-inch 1.5mm, 2mm, 2.5mm, 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, T6, T8, T9, T10, T15, T20, T25, T27, T30, T40
• KEY TENSION ADJUSTMENT: Easily adjust key tightness or looseness using the convenient #2 Phillips fastener
• 270-DEGREE RANGE: Each blade opens independently to 270 degrees for work at all angles
• SQUARE CUT ENDS: Secure, full-depth fit to optimize the contact with the socket, preventing slippage and stripping
• HEAVY-DUTY NYLON HANDLE: Reinforced nylon casing has sturdy and comfortable grip
• RUST-RESISTANT STEEL BLADES: Each blade made from heat-treated alloy steel and coated to prevent rust, ensuring prolonged performance and corrosion resistance

Klein Tools' Pro Folding Hex Key line features a highly durable reinforced nylon handle with easy access to each key. The heavy-duty 31-Piece set includes 4-Inch-long extended reach blades and a strategically placed #2 Phillips fastener on the outer body for effortless key tension adjustment. Klein Tools' hex sets are color-coded for quick identification: red for inch, blue for mm, and green for Torx, enhancing efficiency. 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.