Many bassists already know the qualities of the Seymour Duncan Quarter-pound Jazz Bass pickup — its lightning-hot coil windings with their major 'tude, the power of its 1/4"-diameter Alnico 5 rod magnets, its aggressive attack and lengthy sustain — so why not double up on all that beefy goodness? In this set, you get both the neck and the bridge Quarter-pound Jazz pickups. And since the neck pickup is RW/RP constructed, you can use the pickups together to cancel out interference hum.