Feature:1. Wide Compatibility: This lens collar replacement foot is tailor made and compatible for EF70200mm, for EF100400mm, 18110mm lens, can't be used with other lens, otherwise, it won't fit.2. Adjustable: The bottom of the lens bracket base is 85mm detachable lengthening quick release plate, with 1/4 inch and 3/8 inch screw holes and stainless steel anti slip screws at the bottom. You can adjust the lens and tripod to the right position.3. For Arca Quick Release Plate: It is compatible for Arca type quick release systems, which allow you attach your lens to tripods, ball heads, clamps or for Arca standard panoramic heads.4. Long Lasting: The tripod collar mount ring stand is CNC machined with a hollow weight saving design, polished and surface anodic oxidation, exquisite workmanship for durability.5. Easy Installation: Simply slide the lens into the base slot and rotate the knob for quick and easy installation, no complicated procedures required. Lens collar replacement foot is very convenient to use.Specification:Item Type: Lens Collar Replacement FootMaterial: Aluminum AlloyWeight: Approx. 134g / 4.7oz.Package List:1 x Lens Collar Replacement Foot