Product DescriptionDAddario Phopshor Bronze Acoustic guitar strings are acclaimed worldwide for their great - long-lasting tone Phosphor Bronze was introduced to string making by DAddario in 1974 and has become synonymous with warm acoustic toneFrom the ManufacturerPB030 is a 036 gauge phosphor bronze wound acoustic guitar string Perfect as a replacement string or for creating custom sets Part of the best selling DAddario Phosphor Bronze Wound string seriesPhosphor Bronze was introduced to string making by DAddario in 1974 and has become synonymous with warm, bright, and well balanced acoustic tone DAddario Phosphor Bronze strings are precision wound with corrosion resistant phosphor bronze onto a carefully drawn, hexagonally shaped, high carbon steel core The result is long lasting, bright sounding tone with excellent intonationDAddario, the worlds largest manufacturer of musical instrument strings, is known as The Players choice with a reputation for unsurpassed quality and consistency DAddarios innovative packaging reduces waste and provides protection from corrosion All DAddario strings are manufactured in the USA using proprietary, digitally controlled, state-of-the-art machinery for unmatched performance, set after set