10-47 EJ15 is an extra light gauge Phosphor Bronze string providing lower tension ideal for vintage instruments and playability. Since D'Addario introduced Phosphor Bronze guitar strings in 1974, they have been synonymous with warm and well-balanced acoustic tone. String Tension Chart Item #NoteDiameterTension PL010 E 0.0100 in 16.220 lbs PL014 B 0.0140 17.850 PB023 G 0.0230 27.900 PB030 D 0.0300 26.710 PB039 A 0.0390 24.660 PB047 E 0.0470 19.910 Product Features

• Coating: Uncoated
• Tuning: Standard
• Number Of Strings: 6
• Set Type: Sets
• Wrap Material: Phosphor Bronze

• D'Addario's lightest gauge acoustic guitar string set, known for its superb, long-lasting tone and playing ease
• Preferred for its warm and well balanced acoustic tone
• Environmentally friendly, corrosion resistant packaging for strings that are always fresh
• All D'Addario strings are designed, engineered, and manufactured in the USA
• String Gauges: Plain Steel .010, .014, Phosphor Bronze Wound .023, .030, .039, .047

Does D’Addario have an online string tension guide?

Yes. We offer String Tension Pro - a free, easy-to-use website that allows you to create customized string sets, compare string sets, and determine the optimum gauges for your instrument and tuning. To learn more, click here.

How can I extend the life of my strings?

There are many factors that can affect the lifespan of your strings. Here are some tips to help extend the life of your strings:

1. Wipe down your strings after each use.

2. Try D’Addario XT strings, which utilize a proprietary treatment to extend lifespan, while preserving the tone and feel of your favorite uncoated strings. 

3. Try these maintenance and care products to prolong string life and performance. 

How do I restring my guitar?

Check out the videos to learn the restringing process for electric, acoustic, classical, bass, and other instruments. You will also find videos on restringing, tuning, humidification, and general maintenance.