Jointed Coupler Our Jointed Coupler are used for precise and reliable fixation of cameras, illuminations, sensors or optical accessories. They come with M6, M8 or 1/4“ threads usually in length from one link (72 mm), two links (132 mm), three links (191 mm) or even longer. You can find all available standard versions on our website: Visit our webseit: Link 01/2018 - Specifications are subject to change without prior notice.