Original Canon BS-55 Bayonet Metal Lens Hood Shade for FD 50mm F1.8 F1.4 #B116 | eBay
Amazon.com : Lens Hood for Canon RF 50mm F1.8 STM on EOS R6 R5 RP R Camera, Reversible Lens Shade Replace Canon ES-65B Lens Hood, Compatible with 43mm Filters and 43mm Lens