DSLRKIT Tripod Mount Ring B (W) for Canon 70-200mm f/2.8L IS II USM & EF 100-400mm f/4.5-5.6L IS USM

The tripod mount ring mount on the tripod, it helps you fix and balance your tele lens which is heavy or long lens hanging off the front of camera.Package includes: Tripod Mount Ring x 1'