CANON Genuine OEM Tripod Mount Ring C (W) for EF 70-300mm f/4-5.6L is USM Genuine product used minor marks clean tidy Grey Provide support for your lens when shooting with a tripod, with this tripod mount ring and adapter. This mount ensures your camera and lens are stable and secure with excellent operability. Easy assembly allows for effortless rotation between both landscape and portrait modes.
eBay