Deepshots Olympus 12-40 Pro Zoom Gear is especially designed as a affordable option for Nauticam housings. It works great with Nauticam 7" Dome port (36129)
This gear will also work with Olympus PT-EP08 and 11 and the new PT-EP14 housings with the AOI DPL-10 port. Unfortunately there is no way using the gear inside Olympus PT-EP10, 12 and 13 housings due to the small port aperture.
This gear is the same than the Olympus 12-40 Pro but in black!