Formvar wire with fibre bobbins. Alnico 5 magnets. Carefully wound to create a very warm and full tone at the neck with lots of punch. If you want a metal cover on the neck pickup I offer chrome or gold. The bridge produces a vintage sweet-lap steel like sound. Set calibrated for neck/bridge. My Vintage Country Coils are made in the old style-I like the sweet sound of the low output pickups of the 50's.