Portable Tripod Mount Collar Ring For Canon EF 70-200mm f/4L IS USM Camera Lens
Suitable for Canon EF 70-200mm f/4L USM, for Canon EF 70-200mm f/4L IS USM, for Canon EF 300mm f/4L USM, for Canon EF 400mm f/5.6L USM. 1 Lens Tripod Mount Ring. Easy to install with a fixing screw stud and convenient to use.