The Seymour Duncan SJBJ-1 is a high output single-coil-size "rails" humbucker. Great for everything from heavy blues to heavy metal. This twin coil design pickup gives you the character of Seymour Duncan's popular JB™ model humbucker in a single-coil size. Its adjustable pole pieces more closely emulate the magnetic field of a full size humbucker and allow you to fine tune the balance of your strings. You can expect great harmonics and a sweet high-end. Compared to Hot Rails, the output is reduced and there's more treble response. Comes with four-conductor hookup cable. USA Patent No. Des. 355,207. Available for both bridge (SJBJ-1b)and neck/middle (SJBJ-1n) positions. For all well-balanced instruments. Works equally well with maple and rosewood fingerboards. Players include Joe Perry / Aerosmith, James Pennebaker / Delbert McClinton, Sebastien Lefebvre / Simple Plan, Jeff Trott & Todd Wolfe / Sheryl Crow, Melle Vasquez / Nancy Sinatra, Jennifer Batten / Jeff Beck Band, Alex De Rosso / Dokken.