D'Addario PB021 Guitar string

A Reliable Single Replacement String for Acoustic Guitar

The D'Addario PB021 is a single .021" gauge phosphor bronze wound string built for acoustic guitar. As part of D'Addario's best-selling Phosphor Bronze Wound series, this string delivers the warm, bright, and well-balanced acoustic tone that players have trusted for years. The .021 gauge works well as a higher-register string on standard acoustic guitar sets, or as a building block for custom gauge combinations.

Whether a single string has snapped mid-session or a player wants to experiment with non-standard tensions, the PB021 offers a straightforward solution. Made in the U.S.A. to D'Addario's quality standards, it pairs a steel core with a phosphor bronze outer winding for the familiar feel and dependable tone acoustic guitarists expect.

Technical Specifications

• Gauge: .021"
• Material: Phosphor Bronze wound over a steel core
• Winding Type: Round Wound
• Finish: Coated
• Ending: Ball End
• Compatible With: Acoustic Guitar
• Package: 1 single string

Who This String Is For

The D'Addario PB021 is the right choice for acoustic guitar players who need a single replacement string at the .021 gauge or who want to build a custom set tailored to their playing style. It suits players who prefer the warm, balanced tone of phosphor bronze and want a string that drops in easily without changing the overall character of their instrument. Singers, songwriters, and gigging musicians who break an occasional string will appreciate being able to replace just the one they need rather than buying a full set. Hobbyists and tone experimenters can mix and match individual PB strings to dial in a custom tension and feel.