Check the listing for details. 1 Set D'Addario EJ39 Phosphor Bronze 12 String Acoustic Strings Medium 12-52. Condition: New. Listed at 10.95 USD. 1 Set D'Addario EJ39 Phosphor Bronze 12 String Acoustic Strings Medium 12-52 D'Addario EJ39 12-52 EJ39, D'Addario's medium gauge 12-string acoustic guitar set provides heavier tension resulting in a bolder, more resonant acoustic tone with higher resistance for heavy strumming or aggressive fingerpicking.Medium gauge 12-string set, ideal for heavy strumming and a resonant, projecting tonePreferred for its warm, bright, and well balanced acoustic toneEnvironmentally friendly, corrosion resistant packaging for strings that are always freshMade in the U.S.A. for the highest quality and performanceString Gauges: Plain Steel .012/.12, .016/.016, Phosphor Bronze Wound .025/.010(p), .032/.014(p), .042/.020(p), .052/.030(w) Return Policy: Our return policy is 30 days from date of purchase, buyer pays return shipping in cases involving fully functional products returned for reasons resembling general dislike of the product, or no longer needing the product. In such a scenario there may or may not be a restocking fee. In the unfortunate event that a buyer has recieved a malfuctioning or broken product, we will replace the item or refund the buyer and provide a pre-paid return label in most cases. Feedback: If, for any reason, you have had a less-than-stellar experience purchasing from us, PLEASE CONTACT US PRIOR TO LEAVING NEGATIVE OR NEUTRAL FEEDBACK. Customer satisfaction and the resulting feedback is of upmost importance to us, and we will do everything we can to remedy the situation for you.