Original tube ring for recently purchased TMB 80/600 refractor. Perfectly functional, but I wasn't happy with the slightly misaligned hinges and the thinness of the metal. I'm now using a different one, so don't need this one. 3.5 inches internal diameter, drilled for Tele Vue, holes on opposite side for starbeam. I'll also include a mounting plate for the Giro mount (I think should work for Vixen, too) if you like. $50 shipped in CONUS.
Money orders or personal checks (wait for clearance) only please.