There's a local builder here who has a shop full of random stuff you would never look for, but might find handy. His name is Don Becker and his shop is full of old sabers, fishers, fenwicks & stuff. All he told me was that he knew they were sabers and that possibly these were blanks made for Orvis for their travel tarpon rods years back. They're just gloss black blanks, standard ferrules. He would only sell me 4 of them. Here's a picture of one I built a while back, I figure with guides on it you could get a better idea of the size of the blanks. These are some stiff fuckers. Super thick walls. I fish 30lb braid on this rod with no issues. I'm a shitty photographer.