Features: Enhances your photography experience for SM1560C Tripods Rings,to provide stability and support for camera lens. from aluminum alloy, this lens accessory ensures long performances for easy portability. for both amateur and professional photographers, this Tripods Rings for anyone lookings to improve their shootings precisions. Perfect for various photography, from landscape to portrait shotings, ensuring steady and sharply imaging. for wide ranges of cameras, this Tripods Rings is essential addition to any photographer gear collection, enhancing overall functionality and ease of use. Specifications: Materials: Aluminium Alloy Model: IS-SM1560C Applicable models: for 150-600mm F5-6.3 OS HSM C Package Includes: 1PC Tripods Mount Rings note: Please allow 0-1cm error due to manual measurement. make sure do not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item. Thank you!