Ernie Ball Electric Guitar 8 String Set 10/74 Regular SlinkyErnie Ball Nickel Wound Electric Guitar Strings are made from nickel plated steel wire wrapped around a 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 that compliments all guitar types and playing styles. This set is optimized for longer scale lengths and multi scale instruments. All strings are 39. 5 long and the . 074 has a 37 taper. Gauges are .