Nauticam Insect eye port N60-MR130This port adapter is specifically designed to support the use of the INON UFL MR130 EFS60 Underwater Micro Semifisheye Relay Lens on an N120 port system housing with the Canon AF D 60mm Macro Lens. This port adapter CANNOT be used alone. echnical Specifications Depth Rating 100m Port System N120 Weight Port Opening Diameter 98mm Port Diameter Body Material Anodized Aluminum Alloy Port Material Port Coating Port Shade Material Removable Port Shade