The result of years of research and development, the Gibson Custombucker sets the gold standard for the Gibson Custom Shop and is regarded as a historically accurate reproduction of the legendary 'Patent Applied For' humbucker used in iconic late-1950s instruments. Its warm and rounded tone is achieved with Alnico III magnets and faithful adherence to historical production methods. Each humbucker features two coils wound with 42 AWG wire and left unwaxed, with slightly different winding counts to give every Custombucker its distinctive character.