Product Description DEWALT DWHT70263M Folding Locking Hex Key Set, MM From the Manufacturer DEWALT Folding Locking Hex Key Sets have a push-button locking feature that locks in 3 positions at 90°, 135°and 180°. It has Durable and ergonomic construction with steel side plate for torque (up to 600in. lbs). They include 8 of the most commonly used hex key sizes. Available in SAE or MM sizes.