Canon YB2-0937 Decent Ring Collar
Canon YG2-2189-200 Power Diaphragm FPC
Canon YF2-2023 Lens Mount
Canon YB2-0805 EF Lens Screws
Canon Parts, Cameras - Digital Powershot, Cameras - Digital SLR, Parts, EF EF-S Lenses, Screws - Genuine Canon
Genuine Canon YB2-0805-000 screws for EF, and EF-S lenses. See part lists for specific applications for these and other Canon imaging products. Package of 2 screws. Made by Canon Japan.
Canon XA9-1517 EF Lens Screws
Canon Parts, Cameras - Digital Powershot, Cameras - Digital SLR, Parts, EF EF-S Lenses, Screws - Genuine Canon
Genuine Canon XA9-1517-000 screws for EF, and EF-S lenses. See part lists for specific applications for these and other Canon imaging products. Package of 2 screws. Made by Canon Japan.
Canon YG2-2062-100 Power Diaphragm Flex
Canon YG2-2355 AF-MF-IS Switch
Canon YG2-3001 Power Diaphragm FPC
Canon power diaphragm FPC for the EF 24-70 2.8 L II USM lenses. This part is the FPC only. If you need the power diaphragm assembly with the FPC look here.
Canon CB5-3720 EOS Screws
Canon Parts, Cameras - Digital Powershot, Cameras - Digital SLR, Parts, EF EF-S Lenses, Screws - Genuine Canon
Canon YG9-0462 Lens Mount
Canon YA2-3665 Guide Collar
Genuine Canon lens guide collar for the EF 16-35 2.8 L II USM and EF 100-400 4.5-5.6L IS USM. Made by Canon Japan. See the detail below to measure your lens guide collar.
Use choose an option and select from available sizes.
Use the detail to measure your lens guide collar, then pick from available sizes.
Use the detail to measure your lens guide collar, then pick from available sizes. 
