Best strings for drop tunings and agressive sound. Thickness allows them to be tight down to drop C#, however if you like to go lower and have that agressive, fret-rattling tone, these are best on drop C, B or 5-string lower string tuning. Sound itself is very bright and metallic, yet has that tight low end. Best for metal, hard rock, punk and other genre`s where agressive bass sound is a must. Sound the same around 2-3 weeks of intense playing (2-3hrs a day at least), then start to become dull, yet still sound good!