INCLUYE MARCO NEGRO Y TORNILLOSALNICOFantastic quality alnico magnet humbuckers, with warm and crystalline clean tones, full and bright distorted tones, & smooth sustain. Wax potted for squeal-free performance and brass-backed. These classic pickups allow your guitars natural tone to breath when clean, and break-up naturally when overdriven. Suitable for everything from Clean Jazz, Blues, Classic & Heavy Rock. 4 Wire Version - allowing option to coil tap if required Pole Spacing - Neck: 50mm, Bridge 52mm Neck = 7 k ohm and Bridge = 8 k ohm Mounting screws and 2x black mounting rings are included.