SUNBEAM Acoustic Guitar Strings utilize a phosphor bronze wrap wound on a round high-carbon steel core The tone does not seem to decay as do other phosphor bronze strings The Sunbeam phosphor seems to sustain in a straight line, until the sound "falls off" 10, 14, 22, 30, 38, 48 String Length: 38" Set of Six Strings Made in US, New Jersey by DR Music Inc Free Replacement against manufacturing defects only for the products imported by Trimac Products Private Limited contact