The GHS Bass Boomers are the classic Power String and have been for years. Today they are one of the most popular bass strings in the world and are used by bass greats including the legendary Flea. Like the guitar version, Bass Boomers feature a nickel plated wrap that provides brilliance, volume, sustain and strength, unlike any other bass string. 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. When you buy GHS strings you get quality, consistency, lasting intonation and superbly harmonious sound! GHS Strings - The String Specialists since 1964.