Silver-plated wound fluorocarbon classical guitar strings, normal tension, offering a rich tone. - Brand: D'Addario - Model Name: Pro-Arté Carbon EJ45FF - Type: Classical Guitar Strings - Tension: Normal Tension - Features: Silver-plated wound, fluorocarbon. This set features carbon strings for the high strings and Dynacore strings for the low strings. Tension is normal. Thank you for viewing.