D'Addario Pro Arte classical guitar strings, normal tension, offering high-quality tone. - Brand: D'Addario - Model: Pro Arte - Type: Classical Guitar Strings - Gauge: E-6th .043 (1.09mm) - Tension: Normal Tension - Quantity: 7 sets Thank you for viewing. I'm selling these as they were stored at home. Although unused, they have been stored at home for a long time, so I'm listing them as "like new." Instant purchase is welcome!