I know, i'm a bonehead. I like to experiment with strings, still in search of a favorite. Unfortunately, I think i've found my favorite for my Sadowsky Metro..... but don't know what the he!! they are I've had them on for a long time and still love the sound of these strings. All I know, is they have purple silk windings and I believe them to be nickel. I'm thinking maybe La Bella... er, maybe not. Any of you fine fella's help me? Please. Thanks.