Hybrid 6 string set for electric guitar from M-Steel Slinky series that contains the loudest, most expressive strings ever created, providing increased output, frequency response, and strength. M-Steel, short for maraging steel, is a superalloy used in high stress applications for the aerospace and defence industries. The wound strings are comprised of a patented Super Cobalt alloy wrapped around a Maraging steel hex core wire, producing a richer and fuller tone with powerful low end response. M-Steel plain strings are comprised of specifically tempered steel for maximum fatigue resistance. A patented winding of steel around the ball end of the plain strings reduces slippage, breakage and stays in tune better than conventional plain strings. Gauges .009, .011,.016, .026, .036, .046.