Used. I usually replace them every 1-2 years. I'm listing several sets at once this time, but one set has some rust and is in poor condition (especially the E and A strings), so I'm offering it at a lower price than the other sets. (See photos) For those who want to try Spirocore for the first time or who like a mellow tone! No claims or returns to prevent swapping! I will ship them together in one bag. - Brand: Spirocore - Model: Bass Orchestra 3/4 Medium - Material: Spiral core, chrome wound Thank you for looking.