An ultra-fine layer
of EXP Coating is bonded to the phosphor bronze outer wrap wire which
is then wound onto the hex-shaped core wire. The result is a built-in
barrier against the corrosion and wear that can quickly sap the life
out of your strings and your sound. EXP coated phosphor bronze bass
strings have a natural round wound feel and sound fresh and bright with
a "new string tone" that lasts three to four times longer than
traditional guitar strings.
Guitar Strings 
