Made of 18-8 stainless steel, these are film clips with lead weights. While they haven't been used much, they have been stored for a long time, so there is some aging on the weights. They are in average used condition. There is no problem with hanging film with them. I am also selling other darkroom supplies(^^) Darkroom Supplies Film Developing Film Camera Negative Clip Photographic Paper Enlarger Monochrome Print Color Print FUJIFILM FujiFilm