Welcome, you are looking at a great piece. This is the Seymour Duncan Parallel Axis Distortion Trembucker. Wiring: 4-Conductor Magnet: Alnico 5. DC Resistance: 21.2k Ohm.The Seymour Duncan Parallel Axis features a dual-pole design that delivers increased sustain and lots of upper mids yielding a hot and bright bridge pickup.The patented dual-pole design, combined with the Alnico 5 bar magnet and super high output, produce a bold tone with an articulate, clear high-end and a tight, focused low end. The Parallel Axis with increase your guitars natural sustain, and maintain note clarity even at high gain levels.Trembuckers have wider pole piece spacing, perfect for symmetrical positioning under the strings of guitars with a tremolo bridge. Other features include nickel silver bottom plate, 4-conductor lead wire for multiple wiring options, and vacuum wax potting for squeal free performance. We are an authorized Seymour Duncan dealer. Don’t pass this by.