Ernie Ball 2144 Power Slinky Phosper Bronze Acoustic Guitar Strings give a warm rich sound and reduced string noise. Get this 2-pack for a great savings and be prepared for your next string change! Ernie Ball Slinky Acoustics are produced with an exclusive phosphor bronze wrap wire. Engineered to meet the demands of acoustic musicians worldwide, these concert quality strings provide deep, rich bass notes with clear bright trebles. Ernie Ball Slinky Acoustics are played by The Counting Crows, The Edge, and Maroon 5 amongst many other touring musicians. Made with the finest and freshest raw materials, all Ernie Ball strings are hermetically sealed to ensure your strings stay as fresh as the day they were made.FeaturesString Gauges: Gauges: .013, .017, .026, .034, .046, .056Manufacturer Number: 2144