Set of replacement, calibrated bridge and neck pickups for 4-string J-Bass style electric bass guitar that brings the sound of the 70's Fender J bass pickups to the bass: bright and articulate with a deep, clear low end. They are perfect for slapping, funk and R&B, but also preferred by many rock players. Because pickup windings and materials varied so much throughout the 70's, Aguilar used several pickups from different years as the sonic models. Through a process of listening and prototyping they discovered the very small gradations of wire size and winding patterns that reproduce the bright and deep sound of the 70's Jazz Bass pickup. The pickups use a 42-gauge Enamel wire, Alnico V magnets and single cloth-covered conductor.