Seymour Duncan SJM-1n "Vintage" neck pickup and SJM-1b "Vintage" bridge pickup for Jazzmaster. Accurately reproduces the sound of the original '57 model. Every detail in construction and appearance is duplicated down to the cloth wire leads and hand-ground pole pieces. The neck pickup is reverse wound/reverse polarity for hum-cancelling when both pickups are used together. Direct replacement, requires no modification. Includes wiring diagram and mounting hardware.