D’Andrea USA’s Snarling Dogs Acoustic Guitar Strings are made of the highest quality Phosphor Bronze providing a warm tone to make your Acoustic Guitar ring like a bell! Whether your style is fingerpicking or strumming your chords will ring, harmonics will pop and your bass will remain focused making these strings the top choice for all acoustic guitar players! Snarling Dog Strings deliver monster tone for all standard scaled instruments! Proudly Made in USA!