I broke off a tab on the bracket that holds the Bimini top arms together. I forgot to bring the piece home and don't have access to the boat right now. can anyone tell me the diameter size I need to order? I need the outside eye end is it 7/8"?

If you're asking about the pipe diameter? Usually Bimini tops are made with 7/8" pipe. If it's the same size as the grab rail around your sundeck that should be 7/8" pipe. I had mine made with the same diameter pipe as the bow rail and I believe that is 1" on my 84 272
I'm not sure if I helped or not?

It appears to be 7/8, I ordered parts and will report back if they don't fit. Thanks.