Canon Mount Adapter EF - EOS R, Compatible with EOS R and EOS RP. Brand new, never used and still in box. Paid 269.99+ tax. See full-priced ad: https://www.amazon.ca/Canon-Control-Mount-Adapter-EF-EOS/dp/B07H4LRRRQ/ref=sr_1_5?crid=1MQDCWG4C4BCQ&keywords=canon+mount+adapter+ef-eos+r&qid=1663443732&sprefix=canon+mount+adapter+%2Caps%2C85&sr=8-5