1. Designed to be mounted in your vise, whether it is mounted on a bench, wall, or floor. (Works best when secured in a vise.) 2. By rotating the handle on the side of the tube crimping tool, you can form the desired crimp on the end of the aluminum tube or copper tube. The removable handle is specially designed for the user, allowing you to use it more easily. 3. Form a perfect bead on the tubes so that the rubber or silicone hoses can be more securely fixed to them. 4. Simply insert the end of the tube between the dies and start turning the rotating handle. Make a quarter turn of the wheel with each revolution of the tube to gradually tighten the dies against the tube (Note: Always apply the weld bead.) Name: Tubing Tool Condition: 100% Brand New Application: Use with 5/8 inch (16 mm) ID tubing or larger for proper operation. For aluminum, steel, copper or stainless steel intercooler pipe. For steel/aluminum/stainless steel tube wall thickness should not be more than 0.050 inch