N120 Extension Ring 40 ~with Lock port 8 Macro USM lens

8 Macro USM lens

Step 2: Make sure the vacuum release ring is at its closed position by turning it clockwise until it cannot go any further

Note: Requires purchase of attachment rails appropriate to your housing

This zoom gear is for the Canon EF 11-24mm f/4L USM lens

N120 Extension Ring 40 ~with Lock port 8 Macro USM lensThe Nauticam Extension Ring 40 with Lock is part of the N120 Port System and can be used to add 40mm effective length to an N120 Port setup. See Port Chart for more details on choosing the correct extension and port. Technical Specifications Depth Rating 150m Port System N120 Weight 0. 24kg Port Opening Diameter 109mm from SN A048435 and later Port Diameter Body Material Anodized Aluminum Alloy Port Material Port Coating Port Shade Material Removable