Gauge: Extra Light Tension- String gauge: .010, .014, .024, .030, .038, .047- Material (winding): Bronze- Winding type: Round Wound- Cryogenically frozen to -320ºF to tighten the molecules and minimise microscopic cracks- Removes transient frequencies that create harsh highs and spongy basses, and produces a smoother string- Made in U.S.A