Many users want a screwing tool that covers the widest possible range of applications. They want a single tool for various metric and inch sizes. A tool that automatically adapts to different screw sizes. That screws securely, does not damage anything, and allows for high working speed. Thanks to the continuously automatic gripping jaws that are parallel, several corresponding open-end wrench sizes are covered. When positioning the wrench on the nut or screw, it autonomously finds the required size. The integrated lever mechanism clamps the hex screw – or hex nut – between its jaws, which clearly reduces the risk of slipping and damage. The ratchet function allows for fast screwing work without interruptions or changing grip. Thanks to the use of prismatic angles, a return angle of only 30° is achieved. The single-arm construction in combination with the ratchet function and prismatic angle facilitates work even in very tight assembly spaces. The Joker 6004 adjustable is truly the most universal screwing tool. With self-adjustment. With strong grip. With ratchet function.