WonderPana 145 ND Kit - 145mm Filter Holder, Cap, ND16 & ND32 Filters for 14mm Full Frames (Samyang, Rokinon, Polaroid, etc.) Premium Grade Anodized Aluminum WonderPana145 Core Unit High Quality, Double Threaded, ND16 & ND32 Filter - Made of Optical Glass 145mm x 1mm Standard Thread Enabled Included Finely Crafted, Heavy Duty Inner Pinch Lens Cap 24 Month Manufacturer Warranty