The GuitarHeads P & J Style Bass Pickups deliver a full rich punch and plenty of rumble. The P Model features a Hum Canceling Split Coil design and is great for traditional bass tones. The J Model has a smoother approach, but still has more than enough presence to cut through the thickest mix. These Passive P & J Style Bass Pickups are driven by an Anisotropic Ferrite Magnet (a High-end Ceramic), and is Wax Potted for Microphonic Suppression. These pickups also feature a standard 2-Wire Conductor Lead, for easy installation. Also included are Mounting Screws & Height Adjustment Springs.