Welcome, you are looking at a great piece. This is the DiMarzio EJ Custom Humbucking Bridge Pickup in Black. Wiring: 4-Conductor. Magnet: Alnico 5. Output mV: 200. DC Resistance: 7.85k Ohm. The EJ Custom was designed with Eric Johnson with the aim of making his Les Paul reissue sound more like a Gretsch Country Gentleman. The EJ Custom, which fits as replacement for standard full-size humbuckers, has less power and much more treble response than vintage humbuckers, yielding a pickups with the treble response of single-coils but with the solid bass response of a humbucker. The EJ Custom provides exception note definition through overdriven amps and crystalline tones when run clean. The perfect pickup for anyone looking for a more Strat-like tone out of their humbucking guitars bridge pickup. We are an authorized DiMarzio dealer. Don't pass this by.