DSLR Sea & Sea custom macro & WA ports, extension, cords, lens gears

Getting older and have to move to 4/3 cameras and housings. Need to sell Sea & Sea custom macro and wide angle ports, 20mm extension ring, single and double sync cords, lens gears for Nikon 28-85mm, ED 12-24mm, 2,8/20mm D and much more. See all photos and let me know if you need anything else.

I might be interested in the 20mm extension ring, can you provide pictures, part numbers and sale price as well as location please.

Thanks

bill