Product Description Ernie Ball Skinny Top Heavy Bottom Slinky electric guitar strings are the perfect hybrid set for those who like thick bottom strings without sacrificing the ability to solo on the higher strings. These electric guitar strings are precision manufactured to the highest standards and most exacting specifications to ensure consistency, optimum performance, and long life. Skinny Top Heavy Bottom Slinky wound strings are made from nickel-plated steel wire wrapped around a hex-shaped steel core wire. The plain strings are made of specially tempered tin-plated high-carbon steel, resulting in a bright and well-balanced tone for your guitar. Skinny Top Heavy Bottom Slinky gauges are .010 .013 .017 .030 .042 .052. From the Manufacturer Ernie Ball Nickel Wound Electric Guitar Strings are made from nickel plated steel wire wrapped around tin plated hex shaped steel core wire. The plain strings are made of specially tempered tin plated high carbon steel producing a well balanced tone for your guitar. Gauges . 010, . 013, . 017, . 030, . 042, . 052