Single Cylinder Wings Armoguard (Donuts)Designed for Public Safety divers, these 30 and 40 lb single cylinder wings boast all of the same features as the 30 and 40 lb single cylinder wings listed above but have the following differences: Tabs Description Armoguard exterior provides added benefits More abrasion resistant than Cordura® Fast-drying When it doesn’t get rinsed, it won’t smell or pick up bacterial growth The airway uses an 18” round spiral hose and has a rapid exhaust dump valve aka a cable pull dump Specifications Part # Description 388230 WTX-D30 PSD Wing 388240 WTX-D40 PSD Wing