For Sale Canon Camera Accessories for Sea&Sea Housing

[MyFinsNh20]

I have a the following items for sale. All were purchased and never used due to going with different housing.
Will ship within the US for free.

Sea&Sea focus gear for Canon EF-S 60mm F2.8 Macro USM, Item #31126, Asking $100.00US.
Sea&Sea Zoom Gear for Canon EF16-35mm F2.8L USM, Item #31114, Asking $100.00US.
Sea&Sea Extension Ring 20L, Item #30123, Asking $125.00US.
Sea&Sea Optional Sync Cord 2-pin connector, Item #50122, Asking $110.00US

 

[blibecap]

is this Sea&Sea Extension Ring 20L, Item #30123, Asking $125.00US. for a mdx housing or rdx? what is the diameter?

 

[MyFinsNh20]

is this Sea&Sea Extension Ring 20L, Item #30123, Asking $125.00US. for a mdx housing or rdx? what is the diameter?

This is for a MDX housing. The Sea&Sea book states it sis 129X35.5mm this is what they show for dimensions (DIAXD)