Don't know the part number. Here's a picture of it: http://www.wbmfg.com/products.cfm?PID=79

bp

On 10/29/2014 12:06 PM, tcidan via Af wrote:
What part number are you talking about? I've never heard of a focus ring.

--danp



On 10/28/2014 04:35 PM, Peter Kranz via Af wrote:

Are you supposed to add some kind of adhesive to keep the focus ring from blowing off?

**

*-Peter*



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