The Cleartone Black series is the dark step child of Cleartone strings. Designed to be more powerful in every respect. Extra Heavy-duty construction throughout. Designed for people that Play Hard. Very Hard. Tune down, way down.These Nickel Plated Strings have the patented “No Feel Coating™” and feature the thinnest coating in the industry. At one micron, they feel and sound like traditional strings but with the added benefit of 3-5X string life. In fact, Cleartones were tested to be up to 36% louder than the leading coated string brand and even 10% louder than an un-coated set according to an independent sound lab.Gauges: .009; .011; .016; .024; .032; .042Get yours today; with the security of our many decades of experience and Sam Ash Direct efficient order processing, your satisfaction is guaranteed!