Boost your lens options when shooting underwater with the Extension Ring 60 with Lock from Nimar. Designed to add 2.36" of effective length to a compatible lens port, this extension ring enables you to fit longer lenses into your underwater housing. The extension ring is made of anodized aluminum alloy and has a depth rating of 328'. Included with the ring are a bayonet mount rear port cap and two O-rings.
For full compatibility info, see the NIM-120 Port Chart.
Bayonet mount
Anodized aluminum alloy construction
Also compatible with the Nauticam N120 port system (no lock)