Seymour Duncan Basslines SJB-3b "Quarter Pound" bridge pickup for Jazz Bass. The SJB-3 is a great choice for musicians who want maximum output and extended frequency range. Large quarter-inch wide pole pieces expand the magnetic field and extend the frequency range from low to high end for a fat, full, punchy sound with midrange presence. Specially calibrated for string excursion at the bridge position. Includes mounting hardware and wiring schematic. Made in the USA.