Ernie Ball Earthwood Rock & Blues Phosphor Bronze Acoustic Guitar Strings, 10-52 Gauge (P02151) Description Ernie Ball Earthwood Phosphor Bronze acoustic guitar strings are made from 92% copper, 7.7% tin, 0.5% phosphorus wire wrapped around brass-plated hex-shaped steel core wire. Phosphor Bronze produces a rich tone with excellent clarity. Earthwood Rock and Blues come with a plain G-string (no winding on the third string), similar to most electric string sets, making it optimal for playing leads on acoustic guitar. Gauges .010, .013, .017, .030, .042, .052. Features: Warm, rich tone with excellent projection and clarity Ernie Balls Rock and Blues 10-52 gauge includes a plain G-string, similar to most electric string sets, making this set optimal for playing leads on acoustic guitar Phosphor bronze wound on a hex-shaped, high-carbon steel core wire Element Shield Packaging prolongs string life and keeps strings as fresh as the day they were made Made in California, USA with the freshest and finest materials Product Details: Brand: Ernie Ball String Gauge: .010 - .052 Color: Rock & Blues (10-52) Instrument: Acoustic Guitar String Material Type: Phosphor Bronze Item Weight: 1.38 ounces Product Dimensions: 4.5 x 0.25 x 4.5 inches Country of Origin: USA Item model number: P02151 Is Discontinued By Manufacturer: No Date First Available: March 7, 2007 Color Name: Rock & Blues (10-52) String Gauge: .010 - .052 String Material: Phosphor Bronze Number of Strings: 6 Output Wattage: 120 Watts Size: Single Pack Voltage: 240 Volts