Seymour Duncan TBPR-1b "P-Rails" trembucker. Bridge position for string spacing over 2". White. In the past, if you wanted thick humbucker tones, fat P-90 tones, and clucky FenderĀ® single coil tones, you'd have to haul three guitars to the gig. Introducing the P-Rails, a full-sized trembucker that splits to either a P-90 or a special alnico rail single coil. The humbucker sound is full and expansive, owing to the mis-matched coil design. By using 2-way on-on mini switch or push/pull pot you can access both the humbucking sound plus the P-90, or use a 3-way on-off-on DPDT mini switch to access to the humbucking sound, the P-90, and single coil. Switch not included, available separately. Includes wiring schematic and mounting screws. Made in the USA.