phoakm
Senior Member
simple. it's a hole closest to the bulb.
essentially there are 3 holes, spaced out evenly at 120º, look for the one that you can see through.
personally i use that hole as a zoom scope, to see where my light is hitting by looking through from the back.
Thanks! I found the hole to fit the umbrella.

I love the product. Very Nice! :lovegrin: