Canon CA2-4583 EF Contact
Genuine Canon EF lens contact assembly fits EF Extender 1.4X / 1.4X II, EF Extender 2X / 2X II, EF 14 2.8 L , EF 14 2.8 L II USM, EF 15 2.8, EF 20 2.8 USM, EF 24 2.8, EF 24 1.4 L USM, EF 24 1.4 L II USM, EF 28 1.8 USM, EF 28 2.8, EF 35 1.4 L USM, EF 35 2.0, EF 50 1.4 USM, EF 100 2.0, EF 100 2.8 Macro, EF 100 2.8 Macro USM, EF 100 2.8 L Macro IS USM, EF 28-105 3.5-4.5 USM, EF 28-135 4-5.6 USM, EF 35-350 3.5-5.6 L USM, EF 70-210 3.5-4.5 USM, EF 70-300 4-5.6 IS USM, EF 70-300 4.5-5.6 IS USM, EF 70-300 4.5-5.6 DO IS USM, EF 80-200 2.8 L, EF 100-300 5.6, EF 100-300 5.6 L, EF 100-300 4.5-5.6 Ultrasonic and many more. Made by Canon Japan.
Canon CA2-4585 EF Screws
Canon CA2-4586 EF Screws
Genuine Canon lens contact retaining screws for over 100 of Canon EF, EF-M, EF-S, RF lens products including the EF 14 2.8L, EF 20 2.8 USM, EF 24 1.4L II USM, EF 28 2.8, 35 1.4L II USM, EF 50 1.2L USM, EF 50 1.4 USM, EF 85 1.2L II USM, EF 100 2.8 Macro, EF 16-35 2.8 L II USM, EF 70-200 2.8 L USM lenses, EF 200 2.8L USM, EF 200 2.8 L IS USM, EF 400 2.8 L, EF 400 2.8 L II IS USM, EF-M 18-55 3.5-5.6 IS STM, RF 28-70 2.0L USM and many others. Package of 2 screws. Made by Canon Japan.
Canon CA2-4923 Brass Collar
Genuine Canon brass collar for the EF 100-400 4.5-5.6L IS USM lens. Made by Canon Japan. The screw required to retain this collar is available here.
Use the choose an option and select from available sizes.
Use the choose an option and select from available sizes. 
Canon CA2-6822 Collar Screw
Genuine Canon collar retaining screw for the EF 100-400 4.5-5.6 L IS USM lenses and other Canon imaging products. Made by Canon Japan. Package of 1 screw. Made by Canon Japan.
Use with collar CA2-6842, in stock here.
Canon CA2-6842 Guide Collar
