The Swaging Spin is for hard and soft copper tubing. It creates a precise deep swage without wobbling or cracking that is easier to braze. SPIN Swaging Tool Set containing 6 pieces in a set, with the following diameters: 1/4″, 3/8″, 1/2″, 5/8″, 3/4″ and 7/8″(tube’s outer diameter). Capable of Swaging Soft, and Hard, Copper, and Aluminum when coupled to a drill. Uses a system of heat by friction. The swage stopper will provide great swage depth for perfect fitting. The tools are designed to work along with drills and/ or screwdrivers, with a minimum of 1,800 RPM and 500 watts for corded drills, or superior and 1,800RPM and 18V, or superior, for cordless drills. Using the tools along with less powerful equipment may result in a high decrease in performance.