Cokin Adapter Rings for the L (Z) Series Filter Holder – Cokin Filters
Cokin Cokin 82mm Adaptor Ring for L (Z) series filter holder - Looking Glass Photo & Camera
Amazon.com : SIOTI 100mm Square Z Series Aluminum Modular Filter Holder + 77mm-82mm Aluminum Adapter Ring for Lee Hitech Singh-Ray Cokin Z PRO 4X4 4x5 4X5.65 Filter(77mm) : Electronics
100mm Square Z Series Metal Adapter Ring + Filter Holder For Lee Hitech Singh-ray Cokin Z Pro 4x4"4x5"4x5.65"filter - Camera Filters - AliExpress