Hartke's Sx Stainless Steel Bass Guitar Strings provide Serious Tone® with excellent playability and comfort. Featuring a hexagonal core wire precisely wound to ensure true intonation, the Sx bass strings are engineered to produce clear fundamental frequenciesresulting in excellent bass tone. The important dynamics of deep bass, tight mid range and bright high end are delivered with balance and consistency for a smooth feel from string to string.Stainless steel bass strings provide a super-bright tone that is ideal for funk, metal and other genres where an aggressive, dynamic tone is needed. They create long lasting tone with a distinct punch. For bass players of all levels, Hartke has been the go-to brand for high-quality products with excellent value. For over 25 years, Hartke has been designed and tested by musicians for musicians.