The new Focus electric guitar strings are made of an innovative stainless steel alloy on a hexagonal core.;Perfect balance between crisp highs and tight basses, excellent dynamics, super-brilliant tone and precise sound.;Focus strings are very durable and ideal for vibrato use.;F50M E-Guitar Stainless Steel medium .012-.052;.012 .016 .024w .032w .042w .052w;Set tension: 66.7kg/147.4lbs;