The La Bella Puerto Rico Tres 9-String Set (PRT730) is specially designed for the Puerto Rican Tres, an instrument inspired by the Cuban Tres but shaped like a Puerto Rican Cuatro with distinctive cutaways. This 3-course, 9-string set is crafted with a combination of plain steel and silk & steel strings to deliver the bright, rhythmic tone essential to traditional Puerto Rican music. Made in the USA with American wire and packaged using MAP Technology to prevent tarnishing, these strings ensure long-lasting freshness and dependable performance.