SSR one piece wheels are seamless, precise, light-weight, and strong. SSR manufactures all one piece wheels with SSF technology. SSR starts with an MHD (Magneto-Hydro Dynamics) billet piece of aluminum which is heated to a semi-solid semi-molten state. The material is then pressed in through the SSF machine at an extremely high rate creating the wheel. It is then cooled down and cleaned via air gun. The wheels are thoroughly inspected for imperfections and are sent to the painting process.