I have 2 Pace Edwards aluminum
mast steps available. These are no longer in production and hard to find, but IMO the very best mast steps. I have two at the top of my mast where I spend more time than I'd like. These are light and strong, so I'm not worried while I'm up there.
I found these in a marine thrift in Norfolk and grabbed them for spares. They're in excellent condition. I paid $10 for the pair. You can have them for $10 + shipping