D'Addario EXP-170-5SL, XL Nickel Round Wound, 5-strings bass, Super Long scale (045 - 065 - 080 - 100 - 130). The XL electric bass strings are known for their distinctive bright sound, precise intonation and excellent magnetic output. This bass strings has EXP Coating feature a micro-fine layer of corrosion-resistant EXP Coating applied to the wrap wire BEFORE it's wound onto the hex-shaped, high carbon steel core wire. The result : strings that last 3 - 4 times longer with the brightness, clarity and natural feel of our traditional, world famous strings, the EXP series. Buy D'Addario EXP strings from the authorized distributor, Luthier Guitar Centre, Singapore.