Velvac chrome mirror bases from a 2020 Thor Hurricane. We replaced these with bases that fold so we could get the RV into storage. Note: these are the bases only, no mirror. Includes the wiring harnesses and the rubber gaskets, along with the screwhead covers for each base.
I have the same bases, which corroded within a year. The mirrors are fine, as they are not a cheap chrome plated cast aluminum mold. Seal your new ones around the edges (as the chrome plating is garbage, even depicted in yours). Also, keep your new ones waxed! JMHO