Post-apocalyptic scavenger goggles for a Mad Max themed Halloween costume. Sized to hold 52mm photographic filters, but will also hold plexiglass discs cut with a 1-1/8" or 1-1/4" hole saw. Mine were painted metallic and distressed with paints. My strap was made of scrap leather, attached with D-rings intended for hanging pictures. All bolts are M3, just what I had on hand.