Flamenco castanets made by HERNANDEZ. I believe these were given to me by an acquaintance. Both the body and the strings are clean, with no noticeable stains. Compared to the warm, slightly "poky-poky" sound of wooden castanets, these produce a slightly higher-pitched, more resonant sound. Size: Width: 6.2 cm Length: 8.2 cm (7.7 cm at the indentation) Thank you very much.