D'Addario EJ19 Phosphor Bronze Bluegrass 12-56 Acoustic Guitar Strings EJ19's are a unique set with "light" treble strings and "medium" lower strings. The 3rd string's diameter was selected to make the smooth and acoustically invisible transition between the treble and bass strings. This set has become a popular Bluegrass set. The careful selection of string diameters permits a full range of string tones, from tenor trebles to full, rich basses; all with ample volume. D'Addario introduced their Phosphor Bronze strings back in 1974. Since then they have become synonymous with warm, bright, and well balanced tone. It's extended playing life is an added benefit. D'Addario EJ19 Phosphor Bronze acoustic guitar strings are perfect for Bluegrass. String Diameters: .012 .016 .025 .035 .045 .056 inches Buy in Bulk and Save! Take advantage of lower prices for larger quantities, plus get additional sets of the strings you like. Select 3, 6, or 10 sets and save. Available for Order