Feature: 1. Wide Compatibility: This lens collar replacement foot is tailor made and compatible for EF70‑200mm, for EF100‑400mm, 18‑110mm 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 Foot Material: Aluminum Alloy Weight: Approx. 134g / 4.7oz. Package List: 1 x Lens Collar Replacement Foot