Modified Mapleson and Jackson Rees Disposable Non Rebreathing Circuits can be use both standard and ultra flex tubing so that King Systems enables practitioners to produce truly customized non-rebreathing systems. These King circuits also feature bendable thumbslide with well being valves or tail valves to provide simple, single handed pressure control and regulation. King Systems disposable modified Mapleson and Jackson Rees non rebreathing circuits provide the widest assortment of designs and options available to provide convenient solutions for difficult non rebreathing circuit configurations. Standard and ultra flex tubing offer practitioners complete flexibility during procedures. Multiple port and elbow options grant practitioners to customize their configuration. This material can adjust the thumbslide and tail valves propose total control over the delivery of medical gases. Compatibility with King Systems breathing bags and face masks create a complete system.