Designed specifically for al-ternative tunings such as D-rop D, D-rop C and D-rop C#, Cleartone Monster Heavy sets feature heavier gauge strings for that extra tension you need. At one micron thin, the "No Feel Coating" EMP Treatment is then applied to all 6 strings to ensure longest tonal life without compromises. Monster Heavy Series are heavy duty, but with 3-5 times the lifespan.