These humbucker pickups use an alnico 5 bar magnet, nickel silver bottom plate, 4-conductor lead wire for multiple wiring options, and are vacuum wax potted for squeal-free performance.
SH1n 59 Neck 59 Model 7.6K 4-conductor
SH2n Neck  JAZZ Model 7.6K 4-conductor
SH4 JB Bridge JB Model 16.5K 4-conductor
TB-4 Bridge Trembucker model  17.8K 4-conductor