The Quarter Pound for Jazz Bass was designed to take your bass tone to new heights. This neck and bridge pickup set has it all: hot output, great attack and massive attitude. The 1/4” diameter pole pieces and hot coil windings deliver a full, even response with great sustain and complexity that are at home in any genre of music. The neck pickup is RW/RP (reverse wind reverse polarity) for hum cancellation when both pickups are used together. These pickups are a drop-in replacement for any American Standard Jazz Bass.