Ernie Ball Skinny Top Heavy Bottom Slinky Strings are the perfect hybrid set for those who like thick bottom strings without sacrificing the ability to solo on smaller strings‎.‎ These strings are precision manufactured to the highest standards and most exacting specifications to ensure consistency‎,‎ optimum performance‎,‎ and long life‎.‎ The 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;‎ producing a well balanced tone for your guitar‎.‎ Gauges ‎.‎010 ‎.‎013 ‎.‎017 ‎.‎030 ‎.‎042 ‎.‎052‎.‎ Part number 2215‎.‎