To fix the FILTER-HOLDER onto your lens you need an adaptor ring. then, you slide your filters into the Holder.
Adapter rings are available from 62mm - 112mm and will fit diameters up to 118mm with a 4-point universal ring. The X-pro Adapter Ring System benefits from 20 years of experience with the Cokin 'A' and 'P' systems.
They fit many different types of lens - large diameter zooms, extreme wide-angle lenses, medium and large format, cinema and broadcasting.