Guild Guitars Web Site They're hard to find but Guild really does make acoustic guitar strings. And now YOU can own them, just like . . . well, just like the other folks who buy Guild strings! Of course, you can't own all of the strings but we'll get you as many sets as you want, need, or gotta have! Guild XL300 Phosphor Bronze Extra Light Strings (10-47) $7.18 Guild L350 Phosphor Bronze Light Strings (12-53) $7.18 Guild M450 Phosphor Bronze Medium Strings (13-56) $7.18 String Anatomy 101