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Cobalt produces a stronger magnetic relationship between pickups and strings than any other alloy previously available
Patented technology brings a new definition to “low end” capabilities
Cobalt Slinkys are also soft and silky to the touch, making string bending a breeze
Element Shield Packaging prolongs string life and keeps strings as fresh as the day they were made
Made in California, USA with the freshest and finest materials

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 . 045, . 065, . 085, . 105.