DSLRKIT Tripod Mount Ring B Compatible with Canon EF EF IS EF IS II and EF IS USM (W) 70-200mm f/2.8L USM, 70-200mm f/2.8L USM, 70-200mm f/2.8L USM,

Material: Aluminum alloy Compatible models: Canon EF 70-200mm f/2.8L USM, Canon EF 70-200mm f/2.8L IS USM, Canon EF 70-200mm f/2.8L IS II USM, Canon EF 100-400mm f/4.5-5.6L IS USM Inner ring diameter: 78mm Ring width: 18mm This white tripod mount ring (sold separately) provides stable mounting and smooth rotation for comfortable operation. Compatible with: Canon EF 70-200mm f/2.8L USM, Canon EF 70-200mm f/2.8L IS USM, Canon EF 70-200mm f/2.8L IS II USM, and Canon EF 100-400mm f/4.5-5.6L IS USM.