QUENOX Anello per Treppiede

Anello per treppiede in alluminio compatibile per ottiche Canon:
Canon EF 70-200mm f/2.8L (IS) USM
Canon EF 300mm f/4L IS USM
Canon EF 300mm f/2.8L IS USM
Canon EF 400mm f/4 DO IS USM
Canon EF 28-300mm f/3.5-5.6L IS USM