:Part #" SS-30117
Extension ring 46 with focus knob allows you to manual focus with Sea&Sea MDX housings when also using the correct focus gear on your lens.
This new extension ring includes the NEW port lock from Sea & Sea to ensure that your ports stay in place while on the housing and help limit any risks of flooding.
We dive with our products all the time. Please call the Bluewater Photo team at 310-633-5052 with any questions, or email us at firstname.lastname@example.org
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