1. Ensure the vice is securely installed on the workbench with the base lock rotated firmly. Turn the vice handle counterclockwise to open it. Place the product between the serrated jaws. 2. Scope of Application: The magnetic jaw cover is suitable for various types of pliers, including bench vises, drill vises, router vises, etc. It allows the use of the jaw cover for 4inch vises. If you have a 4inch (approx. 4') vise, you can easily trim the additional lower jaw sleeve. 3. Turn the vice handle clockwise to close it until the jaws grip the object, then continue tightening until the object is firmly held. Avoid overtightening, as this may damage both the item and the vise. After completing the task, turn the handle counterclockwise to release the product. 4. Jaw Cover: The universal 6inch (approx. 6') prism jaw cover of the UP360 is made of quality materials, suitable for any metal bench vise. It is designed for securing metal, plastic pipes, threaded items, etc., ensuring safe protection for all product surfaces or cylindrical objects.