A 4-string long-scale bass set with a hybrid 45–105 gauge (light on top, medium on bottom) for balanced tone. Crafted with high-carbon steel cores and nickel-plated wraps, EXL165 delivers clear fundamentals, tight booming lows and bright, punchy highs. The varied tension provides a firm, even feel across the neck – lighter on the top strings for agile playability, a bit heavier on the lows for powerful low-end definition. D’Addario’s proprietary hex-core construction ensures perfect intonation and robust durability, giving you smooth playability and stage-ready tone that holds up gig after gig.