Canon YG2-0519 Power Diaphragm
Canon CY3-2202 Fixed Sleeve
Canon YB2-5525 Lens Mount
Canon CY1-2428 Lens Mount
Genuine Canon lens mount for the EF 70-200 4.0 L USM, EF 100-400 4.5-5.6 L IS USM, and other EF lenses. Made by Canon Japan.
See the detail chart below for the proper place to measure your lens mount. Then choose from the most popular sizes.
We stock the most requested mounts 2.10, and 2.60. We can order other sizes available.