Canon Tripod Mount Ring B (B) for EF 100 f/2.8 Macro USM MP-E65 f/2.8 EF 180 f/3.5L Macro USM

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Canon Tripod Mount Ring B (B) for EF 100 f/2.8 Macro USM MP-E65 f/2.8 EF 180 f/3.5L Macro USM

Canon Tripod Mount Ring B B for EF 100 f28 Macro USM MP-E65 f28 EF 180 f35L Macro USM Lens only