APPLICABLE DEVICES: The workmanship is very delicate, and it is close to the mount, smooth and easy to assemble. Fit for Canon 70-200mm F2.8 lens camera,please contact us if you’re not sure whether this lens adapter ring fits for your camera. | HIGH-QUALITY MATERIAL: Camera Tripod Mount Collar Ring is made of high‑quality aluminum alloy material, CNC integrated molding process, durable and wear‑resistant, baking finish processing, oxidation resistance. | PRACTICAL AND CONVENIENT: Reduce pressure on hands and extend working hours,and the interior is planted with a high‑quality flannel surface, which will not scratch the lens body, better protect your camera, reduce pressure on hands and extend working hours, bring you a different experience. | EASY TO CARRY: Lens Tripod Mount Collar Ring is small size, lightweight, easy to carry, convenient to use,the lens tripod ring makes it easy to mount the telephoto lens camera to a tripod, balanced camera body. | QUALITY SERVICE: We are committed to bringing customers a quality purchasing experience, this will be your best purchase option. If you have any questions about this item, please contact us or ask your questions in Q&A, we will solve your problems as soon as possible, thanks!