B + W 72mm UV Protection Filter (010) for Camera Lens - Xtra Slim Mount (XS-PRO), MRC Nano, 16 Layers Multi-Resistant and Nano Coating, Photography Filter, 72 mm, Clear Protector - Walmart.com
Nikon 72mm NC (Clear) Filter at KEH Camera
Amazon.com : Nikon 72mm Filter Set, 72mm NC Neutral Clear Filter and 72mm Circular Polarizer II Thin Ring Multi-Coated Filter : Camera Lens Filter Sets : Electronics