Features: Enhances your photography experience with Lens Collar Foot Stand, specifically for EF 400mm f/2.8L & EF 600mm f/4L lens. from aluminum, this Tripods mount Rings base ensures stability and support for your camera, making it essential accessory for professional photographers. for both amateur and professional photographers who require support for their telephoto lens during shootings. Perfect for use in various shootings, from wildlife photography to sports, where steady shotings crucials for capturings images. This support bracket holder is also for fluid heads, providing mounting option for your camera gear. Specifications: Materials: Aluminum Package Includes: 1PC Tripods Mount Rings note: Please allow 0-1cm error due to manual measurement. makes sure you not mind before bid. Due to the differences between different monitors, the picture may not reflect the actual of the item.