Ernie Ball Cobalt Slinky Electric Bass Guitar Strings provide an extended dynamic range, incredible harmonic response, increased low end, and crisp, clear highs. Cobalt provides a stronger magnetic relationship between pickups and strings than any other alloy previously available. Cobalt Slinky bass guitar strings are also soft and silky to the touch, making string bending a breeze. Gauges .050, .070, .085, .105 Features:- •Cobalt attracts the magnets in your pickups more than any other alloy available. •Enhanced output/Increased low end. •Incredible harmonic response. •Crisp, clear highs. •Element shield packaging prolongs string life and keeps strings as fresh as the day they were made. •.050, .070, .085, .105