Item Type: Bayonet Mount Ring Material: ABS Gross Weight: 11g / 0.4oz Compatible Models: for EF S 1855mm f3.55.6 IS II lens Package List 1 x Lens Bayonet Replacement Part 1Applicable Models: This bayonet mount ring is suitable for EF S 1855mm f 3.55.6 IS II lens, please confirm the lens model before use. 2Stable and Reliable: This lens bayonet has passed 100% test before delivery, and will leave the factory after passing the test, reliable and stable, can be used with confidence. 3Perfect Fit: This lens repair mount ring is designed to be accurately shaped and sized to work properly when installed correctly. 4Third Party Product: The lens bayonet mount ring for camera is a third party new product, not an original product, but has the same function. 5Professional Installation: Professional maintenance personnel are recommended to install and remove this replacement lens accessory.