This aguilar 4JMHCSet Pickup Kit includes one AG 4M pickup for the bridge position and an AG 4J-HC pickup for the neck position. The AG 4M humbucking pickup is wired in parallel to recreate the classic Stingray tone—crisp treble, articulate midrange and thunderous lows. By adding the AG 4J-HC pickup, you can enjoy the deep, resonant tone of a neck position, Jazz Bass-type pickup without any 60-cycle hum.