This metal tripod ring allows you to mount and balance your heavy or while the lens is attached to the front of your
camera. Fabric on the interior of the tripod ring provides protection from damage to the camera lens. This tripod mount
ring is compatible with the Canon EF 70-300mm f/4-5.6L IS USM lenses. By adding a tripod collar to your lens you can
achieve better balancing on a tripod.
Inner diameter approximately 78mm
Ring thickness approximately 17mm