SUPER SLINKY COBALT ELECTRIC GUITAR STRINGS - 9-42 GAUGE ERNIE BALL COBALT SLINKY ELECTRIC 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 GUITAR STRINGS ARE ALSO SOFT AND SILKY TO THE TOUCH, MAKING STRING BENDING A BREEZE. GAUGES .009, .011, .016, .024, .032, .042