Robert Trujillo is a bassist who played with Suicidal Tendencies, Infectious Grooves, Black Label Society, Jerry Cantrell, and Ozzy Osbourne's band before joining Metallica in 2003. See more at www.metallica.com.

A portion of profits from the sale of Robert Trujillo's strings go to All Within My Hands: All Within My Hands is dedicated to creating sustainable communities by supporting workforce education, the fight against hunger, and other critical local services. See more at allwithinmyhands.org.

Photo Credit: Tim Saccenti