The Mattebox Rod Support 4x4 is compatible with lenses that have a front side diameter of up to 114mm. This advanced compact mattebox, includes one fully rotatable 4x4” filter frame, one fixed 4x4” filter frame, a French flag and a flexible stretch donut. This mattebox can also be used as a Clip-on 4x4 when disassembling the rod support. Optional step-down rings are available from 114mm- 110, 105, 98, 95, 87, 85mm and from 105mm- 82, 77 and 72mm.