D'Addario BW021 Guitar string

D'Addario BW021 Single Acoustic Guitar String

This single replacement string for acoustic guitar is sized at .021" (0.53 mm) gauge. Part of the 80/20 Bronze Wound Singles line, the BW021 features round wound construction with a hex core, delivering the bright, crisp, deep, and projecting tone that has made 80/20 bronze a studio and stage favorite since the 1930s, when the alloy was co-created by John D'Addario Sr. and John D'Angelico. It works as a replacement for a broken or worn string, or for players building a custom gauge set. All D'Addario strings are designed, engineered, and manufactured in the USA.

Technical Specifications

• Gauge: .021" / 0.53 mm
• Winding Type: Round Wound
• Core: Hex
• Wrap Material: 80/20 Bronze
• Number of Strings: 1
• Compatible With: Acoustic Guitar

Who It's For

Acoustic guitar players who need a single .021 gauge replacement without buying a full set will find this string a practical solution. Custom set builders can mix gauges or replace individual strings on a hybrid setup using the BW021. The 80/20 bronze wrap produces a bright, crisp tone with deep, projecting bottom end, well-suited for recording sessions, traditional acoustic styles, and vintage enthusiasts. Those seeking the historical, extra-bright character of 80/20 bronze will appreciate the authentic voice.