Tripod Mount Ring/Lens Collar for Canon EF:70-200mm F4, EF:200mm F2.8, EF:70-200mm F4L IS, EF:300mm F4L, EF:400mm F5.6L, EF:80-200mm F2.8L White Tripod Mount Ring/Lens Collar for Canon EF:70-200mm F4, EF:200mm F2.8, EF:70-200mm F4L IS, EF:300mm F4L, EF:400mm F5.6L, EF:80-200mm F2.8L White