Features: Enhances your photography stability with our upgraded tripod mount Collar, ensuring precise and steady each time. From imported aerospace grade aluminum using high precise machining, this durability and wear resistant adapter features a plushie interior lining to protect your lens from scratches. For professional photographers who frequently use telephoto lens for capturing distant subjects precisely. Perfectly for outdoor, sports event, and wildlife observation where long stable photograpgy is essential, allowing seamlessly change between horizontal and vertical compositions. Easy installation and secure locking mechanism, this tripod mount Collar becomes indispensable accessory for enhancing the versatility and performances For EF lens. Specifications: Collar Inner Diameter: about 65mm/2.56in Collar width about 18mm/0.71in Component: Aluminum Suitable for lens: ① For EF 70-200mm F4 ② For EF 70-200mm F4L IS and EF 70-200 f4 IS ③ For EF 200mm F2.8 ④ For EF 300mm F4L ⑤ For EF 400mm 5.6L ⑥ For EF 80-200mm F2.8L Material: Imported aviation aluminium Package Includes: 1PC Camera Tripod Mount Adapter note: There might be a bit color distortions due to different computer resolution There might be size errors due to different computer resolution