Allows installing FNX lens ports and port accessories (or third party lens ports and port accessories featuring a similar mounting system) on housings (or port accessories) featuring the Fantasea FML port system (or third party housings and port accessories featuring a similar mounting system).
Specifications
Construction: Hard anodized Aluminum alloy 
Depth rated to 60 meters / 200 feet 
Dimensions (diameter x height): 125 x 68 mm / 4.9 x 2.7 inch 
Weight: 289 g / 10.2 oz 
Included in package: Rear cover, Front cap, Silicone grease, Spare O-ring seal, O-ring remover and Microfiber cloth 
Manufacturer’s warranty