All metal except for plastic guide slots. Accepts all 2mm Thick 150mm Filter Brands inc Lee, Haida, Nisi, Kase, Formatt Hitech and ICE. The item "Kase 150mm Heavy Duty Filter Holder Kit Nikon 14mm-24mm F2.8G Lens Easy Install" is in sale since Tuesday, March 12, 2019.This item is in the category "Cameras & Photo\Lenses & Filters\Filters". The seller is "oeccamera" and is located in Happy Valley, Oregon. This item can be shipped worldwide.