Canon X96-1723-020 EF Screws
Canon XA4-9200-806 EF Screws
Genuine Canon lens mount retaining screws for the EF 16-35 2.8 L USM, EF 16-35 2.8 L II USM, EF 17-40 4.0 L USM, EF 24-70 2.8 L USM lenses, and other Canon imaging products. Made by Canon Japan.
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Canon YG2-2080 Front Sleeve
Canon CY3-2202 Fixed Sleeve
Canon YB2-1326 Collar Screw
Genuine Canon screw to retain all sizes of collar YB2-1328 for the EF 16-35 2.8 L II USM lenses and other Canon imaging products.  Package of 1 screw. Made by Canon Japan.