D’Addario’s classic 45–100 Regular Light long-scale bass strings, a best-selling gauge for decades. Built with a high-carbon steel core and nickel-plated steel wrap, EXL170 delivers a balanced, punchy tone: the lows are tight and defined, the mids and highs are clear and bell-like. Regular light tension gives a perfect blend of response and playability – easy to slap or finger-pluck without sacrificing a solid low end. Thanks to the proprietary Hex-Core design, these uncoated strings stay perfectly intonated and offer rugged durability, delivering the smooth feel and reliable performance professional bassists demand.