Aguilar AG4J 60's Series Jazz Bass Pickup Set Product OverviewThe Aguilar 60's Series Jazz Bass Pickup Set give you classic tone straight from the 60's! Period-correct heavy Formvar wire and Alnico V magnets give the Aguilar 60's series Jazz Bass pickups an authentic sound with the warm "burp" of the instruments of yesteryear. The AG4J60 fits into 4 string basses while the AG5J60 is for 5 strings.These pickups are ideal to be paired with Aguilar OBP preamps.