Originally released as an upgrade to American Standard Series basses in 2008, this bridge features grooved and plated brass barrel-style saddles, hi-mass sustain block, and top-load or strings-thru-body bridge plate design. Package includes bridge plate, four barrel-style saddles, saddle height screws, and intonation screws/springs. Includes mounting hardware. 3-screw bridge mount design. Used on American Standard Bass (US) models manufactured from 2007-Present. Will not retrofit directly to a traditional 5-screw mount bridge.