Thanks Eric!
I actually have this funny feeling that the barrels of my eyepieces are all 1.25", but I'm not at home to check that. Just going from memory they are roughly 1" and I'm pretty sure they aren't 2".
Looking at the 8" on Andrews comes with 1.25" and 2" -> 1.25" adapters. Mine is an 8" GSO that I got from Andrews 6 years ago, so it's probably safe for me to say it's 1.25", though I guess its not much of a hassle to get an adapter!
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