Casement Window Lock Handle Replacement: This window crank handle lock is designed for casement and aluminum windows, providing reliable opening and closing control. Its smooth 90-degree rotation mechanism enhances the user experience for home windows (Size: 4.72X2.75X1.96 inche) Durable Material: Made from aluminum alloy with a white sprayed surface this window handle offers resistance to corrosion and wear suitable for long-term use in various household window types Window Lock Handle Size: To adjust your bracket to the thickness of your door, there is a set screw that must be removed with the included Allen wrench. Remove set screw, slide bracket over the storage shed door handle shaft to desired position, then reinstall and tighten set screw to keep the bracket in place EASY INSTALLATION: 3/ 8 drive bit is required to drill the installation hole if its not for the replacement. Insert the Front L- Handle and adjust back D handle to the thickness of your door with allen wrench. The D handle latches to the door frame when the front L handle. Turn 90 degrees clockwise to open the door. And then fix the L- handle with 2 head screws BUILT TO LAST: When installed correctly, the retaining screws are put in from the back of the door so no screw heads are exposed from the outside when locked. Your existing D shaped latch on the inside holds the exterior handle on as fastened to the shaft with a set screws