Flattened round beads w hole drilled out, slash-carved, vintage plastic---possibly bakelite---but I have not tested them, I don't really believe in the test. So, I got them reasonably and will sell that way. They are probably 50's vintage so they are not the real old, old stuff....slash carved, no two *just* alike, about 19mm, TWELVE in each package, DEFINITELY VINTAGE, great for your fashion and organic-look designs....grab em while they last, I won't have more!