Ernie Ball M-Steel Electric Guitar Strings are made of a patented Super Cobalt alloy wrapped around a Maraging steel hex core wire, producing a richer and fuller tone with a powerful low-end response. M-Steel plain electric guitar strings are comprised of specially tempered steel for maximum fatigue resistance. The electric plain strings also utilize a patented winding of steel around the ball end that reduces slippage, and breakage and stay in tune better than conventional plain strings.  

Features:

• Material: Patented Super Cobalt Alloy
• Gauges: .010, .013, .017, .026, .036, .046