Royal Global MAX Bass ClarinetIntermediate Model, Coposite Body, Poly Cylindrical Bore, Silver plated Mecanism, Leather Pads with Resonators. The Royal Global MAX is a revolution in bass clarinet manufacturing. Based on the Polaris bass clarinet, the MAX retains many of the professional features and acoustical designs but is manufactured from Royal's exclusive ECO material. This new material, years in the making, is a combination of mostly grenadilla powder with a special