Seymour Duncan created the JB and Jazz Modelpickups for London"s rock royaltyyears before he and Cathy Carter Duncan started Seymour Duncan Research Labs. When the new company added production pickups to its menu of custom services, of course the JB and Jazz were among the first offerings. Before long, the JB Model became the world"s most popular humbucker. Today they wind the JB and Jazz exactly the same as in the early years, but with modern updates for today"s guitarists, like four-conductor lead wire, sand-cast magnets, polycarbonate bobbins (which can better handle their vacuum wax-potting process), and short-legged bottom plates. For a limited timeone year onlySeymour Duncan is proud to offer this 35th Anniversary Commemorative JB/Jazz Set. Like the earliest production JB and Jazz, these special Commemorative pickups will have single-conductor wire, rough-cast magnets, butyrate bobbins, and long-legged bottom plates featuring a special laser-engraved 35th Anniversary logo. Construction: Plain enamel wire, butyrate bobbins, rough-cast Alnico V bar magnets, long-legged bottom plates, and vintage single conductor hook-up wire. Sound: Rich harmonics, great sustain, smooth distortion, and clarity. Both pickups include: Long Mounting Legs Single Conductor Wire Maple Spacer Butyrate Bobbins Rough Cast Alnico V Bar For: Connoisseurs of the best of the historic Seymour Duncan sounds. Instrument: Dual-humbucker guitars.Moderate output Articulate and clear tone when clean Full and bright when distorted