Metallica's James Hetfield and Ernie Ball Strings have joined forces for Hetfield's signature line, called "Papa Het's Hardwired Master Core Signature Strings." PlanetSixStaring.com posted, Papa Het’s new Hardwired Master Core set, "consists of a never before offered 11 to 50 gauge combo, designed for his aggressive style."

James Hatfield said in the press release, "With all the companies we’re with, we’re super proud to be with Ernie Ball! For them to take on the challenge of, 'Hey I got an idea, can you do this…' — they have stepped up to the challenge! I’m super proud!"

The specs on the Ernie Ball's new Papa Het's Hardwired Master Core Signature Strings are:

Never before offered gauge combo (11, 14, 18p, 28, 38, 50)

"Master Core" heavier core to wrap ratio

Wound strings wrapped with Paradigm plasma-enhanced nickel plated steel around ultra-high strength tin plated steel hex core

Paradigm ultra-high strength tin plated steel plain strings

Thicker sound

Added pitch stability

James Hetfield told us a while back that he couldn't stop writing new material even if he wanted to: ["I can't turn off the creative part of me, which is — what a great gift. There's stuff coming out all the time, whether it's in the tuning room, in my hotel room, sitting at home with the acoustic, wherever. The stuff is coming out, and it gets recorded or written down or something, some way, and it'll come out at some point. Whether it's on this album, the next album, who knows?"] SOUNDCUE (:21 OC: . . . album, who knows.)

Metallica’s James Hetfield On Writing Songs All The Time :