Super 58 Pickups The Super 58 pickups deliver the smooth, nuanced tones and the biting growl of blues. Ebony Fretboard w/Artstar Fret Edge Treatment The Ebony fretboard with Artstar fret edge treatment provides tight response and smooth left-hand fingering. Bone Nut The bone nut provides richer tone from low to high. Sure Grip Knobs The Sure Grip III knobs are designed for precise control with nonslip functionality, along with smooth and classic looks.