Gauges: 12-16-24w-32-42-53 (Traditional Light) ROUND CORE.
Phosphor Bronze wound strings were introduced in the early Seventies and have become the most popular acoustic string. Phosphor bronze wire is made from approximately 92% copper, 7% zinc and 1% phosphorous. Phosphor Bronze provides nice highs and lows, as well as pleasant subtle overtones. Phosphorous is used to help reduce tarnish and corrosion.

By design, round core strings must be handled carefully so that the outer winding does not come lose. On guitars that have a an eye in the tuning post, it is important to install the string and tune to pitch before cutting the excess string off. On guitars where the tuning post has a hole down the center which requires the string to be cut prior to placing the string down the post hole, it is important that to you first make a 90 degree bend before cutting the string. It is best to make that 90 degree bend about two inches longer than the post where you will be installing the string. Once you have made the bend leave about one-half inch before cutting the string then place the bent section inside the tuning post and tune to pitch. Be aware that it takes longer for a round core string to "settle" in and it requires many more tugs, but once installed and settled in, they are amazing.