NAMM '14 - Lace Bill Kelliher Dissonant Aggressor & Brent Hinds Hammerclaw Signature Pickups Shawn HammondFebruary 11, 2014VideoHear and see a demo of the new signature passive pickups designed for and by Mastodon's guitar duo.whats-newmastodonvideosbill-kellihergear-show-demonamm-2014brent-hindsgearhumbuckerlacepickups-accessoriesGearPickup ReviewsNAMMVideosAccessories