Seymour Duncan Quarter Pound for Jazz bass, bridge, SJB-3B
From the manufacturer:
This bridge pickup has quarter-inch diameter Alnico 5 rod magnets to deliver all the attitude you could ever want from a Jazz Bass.
This pickup has it all: hot output, great attack and massive attitude. The 1/4” diameter poles and hot coil winding delivers a full, even response with great sustain and complexity for a powerful tone suited to any genre. This pickup is a drop-in bridge position replacement for any American Standard Jazz Bass (Mexican Standard Jazz Basses use two neck-sized pickups).
Hand-built in Santa Barbara, CA, the Quarter Pound for Jazz Bass uses Alnico 5 rod magnets and Forbon flatwork, and is wax potted for squeal free operation. Comes with black cover.