Use Alnico 5 magnets, vulcanized fiber bobbin, AWG42 wire, and braided cloth cables, exquisite craftsmanship brings a great sound to your guitar. The middle pickup is reverse wound and reverses polarity (RwRP) so that it cancels the hum as a 'humbucker' would when playing in positions 2 & 4 on a traditional 5-way set-up. The bridge pickup is slightly hotter to give it a higher output and balance the pickups as a set. Each pickup is fully wax potted for squeal-free performance. Pole Spacing: 50/50/52mm.(Neck/Middle/Bridge). Resistance: Neck: 5.8K,Middle:6.1K, Bridge:7.2K. Inductance H: Neck: 2.2H,Middle:2.4H, Bridge:3H.