10-14-20W-28-40-50 Lenth 43 inches. 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. It took several years of trial and error to develop a proprietary string coating that resists tarnish and corrosion without compromising tonal quality. Phosphor Bronze provides nice highs and lows with pleasant subtle overtones. Phosphorous is used to help reduce tarnish and corrosion.
These stings are silky smooth, light to the touch and crisp and bright in tone. You could certainly do worse. They easy and comfortable for playing extended periods of time. The high E string is where I have most of my issue with breakage. These are delicate not the best for excessive bending. But damn they sound good.
Going back to playing acoustic guitar after a 45 year hiatus isn't easy. I found I couldn't practice more than a few minutes on steel strings, even when I had built up good calluses on nylon ones. And nylon ones just don's sound good on a steel-string guitar. A friend bought me a set of your ultra-light strings, and they let me practice, and sound lovely. Of course, I broke the first 2 high-E strings trying to get them on.... luckily by that time I had one more....They are a little delicate... but I don't play very loud. I'll be ordering yet another set. For when I break these.