These Ernie Ball M-Steel Power Slinky (11-48) are the 'world's loudest' guitar stings ever created which provide a richer tone, more volume and better expression. These are perfect for tuning down to low tunings like drop C. The thicker strings will allows better response when they're tuned lower! So for metal chugging and riffing these are perfectly powerful!The rich tone and powerful low end produced ensures a brilliantly balanced sound right across the spectrum. Thanks to the reinforced wrap wire you can rock out for longer without breaking a string!In the Power gauge the individual thicknesses are 11, 14, 18, 28, 38, 48! This pack is for sale with FREE next day UK delivery so get them quick and experience the awesome M Steels!