From 1964 to now the GHS Boomers series has been the flagship set of GHS Strings. Used by musicians in every genre the Boomers have shown to stand up to any playing style. Now known as The Power String GHS Boomers continue to make their mark on music across the world. The roundwound guitar set is made with Nickel-Plated steel wrapped tightly around a round core wire. The combination provides the string with its bright characteristic and long-lasting tone. Introducing our brand new NitroPack singles! Each single string is sealed in a nitrogen environment eliminating all oxygen in a tear-resistant package. Whether you use one string or the whole set. ABOUT GHS STRINGS GHS Strings are manufactured in a state-of-the-art climate controlled facility using precision equipment and only the purest of materials. The air-tight Fresh Pack locks in factory freshness that endures the test of time and locks out corrosion. When you buy GHS strings you get quality consistency lasting intonation and superbly harmonious sound! GHS Strings - The String Specialists since 1964. GB Set: 009 1/ DY24-DY34-DY