TITE-FIT Electric Guitar Strings utilize a nickel-plated steel wrap wire wound on a round core wire to produce a fatter sound. This classic construction makes TITE-FIT a great all-around string that works for a range of styles and genres, including Rock, Blues, Metal and Jazz. The use of the finest core and wrap-wire materials ensure this classic design meets modern performance standards. • MFSKU MT-10 • UPC 600781000628