Description: The TOUGHSERIES Fractional Folding Hex Key has the reliability, durability, and control skilled trades need for both precise and heavy-duty applications. Tackle tough jobs using professional-grade S2 keys that deliver high endurance, torque, and 40% less twisting. Get performance you can depend on with a durable construction and black nickel coated keys that provide 10X corrosion resistance. Utilize the convenience of a push-button to lock keys in place at 90°, 135°, and 180° during use. Features: 10X Corrosion Resistance - Black chrome coating and nickel tip provide advanced protection against rust 2X Greater Torque - S2 Steel Bar provides high endurance and durabilitycompared to DWHT70262M Push-Button Locking - Locks in 3 positions at 90°, 135°, and 180° Construction Steel Side Plate - Enhances durability with a comfortable TPR grip Includes Most Commonly Used Hex Key Sizes - 1.5, 2, 2.5, 3, 4, 5, 6, 8 Includes: (1) Fractional Folding Locking Hex Key