Canon CY1-2180 Lens Mount

Genuine Canon lens mount for the EF 35 1.8, EF 35 1.4 L USM, EF 50 1.4 USM, EF 85 1.8 USM, EF 100 2.8, EF 70-210 3.5-4.5 Ultrasonic, 70-300 4.5-5.6 DO IS USM, EF 75-300 4-5.6 USM, EF 75-300 4-5.6 IS USM, EF 75-300 4-5.6 II, EF 75-300 4-5.6 II USM, EF 75-300 4-5.6 III USM, EF 75-300 4-5.6 III (DC), EF-S 18-135 3.5-5.6 IS, and the EF-S 18-200 3.5-5.6 IS lenses. Made by Canon Japan. See the detail chart below for the proper place to measure the mount on your lens. Then pick from the sizes available. Please Note. We stock the most common mounts, 2.10, 2.70,  and can order other sizes available.