Features: Enhances the stability For telephoto lens with our tripod mount adapter specifically for models like EF 70 200mm F4 and EF 300mm F4L, ensuring secure attachment. 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. Easily switches between horizontal and vertical compositions with the rotating lock knob, allowing seamlessly conversion without adjusting your tripod head. Specifications: Collar Inner Diameter: about 65mm/2.56in Collar width about 18mm/0.71in Component: Aluminum For EF 70-200mm F4 ; EF 70-200mm F4L IS ;EF 70-200 f4 IS ;EF 200mm F2.8 ; EF 300mm F4L ; EF 400mm F5.6L ; EF 80-200mm F2.8L 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