The Cobra Hightech range from Knipex is designed to save you time without compromising on quality. Each wrench is designed to autolock to your desired capacity by simply positioning the upper jaw to the workpiece, pushing the button and moving the lower jaw to the close position. Available in a range of sizes, each product is manufactured from durable chrome vanadium steel and possesses ergonomic, comfort handles. Features and Benefits Ergonomically designed handle with optimum width for complete user comfort and grip when using Simple adjustments can be made to suit your specific application; simply push the button for adjustment on the workpiece Possesses a self-locking on pipes and nuts: no slipping on the workpiece and low handforce required Special hardened teeth are specifically designed for optimum grip on surfaces Box-joint design provides high stability due to the double guide feature Reliable catching of the hinge bolt ensures that there is no unintentional shifting w