Style: Yoke (A-Clamp); First Stage - Four LP Ports and Two HP Ports; A2-DC Balanced Regulator; Environmentally Sealed and Dry; Minimal corrosion extends regulator performance; Flow By Piston; Second Stage - The Only Pneumatically Balanced Valve Body in a rental/entry level regulator; Single Tube Balanced Valve Body provides improved reliability and performance; Co-Molded mouthpiece - The large co-molded mouthpiece uses two different silicone compounds and colors to reduce jaw fatigue; Free Parts for Life (Restrictions Apply)