Product Description Ernie Ball Not Even Slinky’s 12-56 gauge is optimal for detuning. These electric guitar strings are precision manufactured to the highest standards and most exacting specifications to ensure consistency, optimum performance, and long life. Not Even 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 for that iconic Slinky feel and tone that players have relied on for decades. Not Even Slinky gauges are .012 .016 .024p .032 .044 .056. From the Manufacturer Optimal For Detuning Ernie Ball Not Even Slinky Electric Strings are perfect for those who like to detune their instrument to lower tuning combinations. Metal fans worldwide have gravitated towards the Not Even Slinky set to give their guitar the optimal gauge combination for Drop D & Drop C tuning. These strings are precision manufactured to the highest standards and most exacting specifications to ensure consistency, optimum performance, and long life. Not Even 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; producing a well balanced tone for your guitar. Gauges .012 .016 .024p .032 .044 .056. Part number 2626.