From Fender :
Do you want the sound of a '50s Strat®, but with a little bit more attitude?
Check out the Custom Shop Fat '50s.
These calibrated pickups are constructed with hand beveled, staggered, Alnico 5 magnets and Formvar wire on the coils.
The Fat '50s deliver enhanced bass response without the harsh mid-range.
The middle pickup is reverse wound/reverse polarity for hum canceling in positions 2 & 4.
The blues never sounded so sweet.
OEM on Custom Shop Showmaster Series Stratocasters®. Available in white only, sold as set of 3.
Custom Shop Fat '50s Bridge Pickup
DC Resistance: 6.2K
Inductance: 2.8Henries
Custom Shop Fat '50s Middle Pickup
DC Resistance: 6.3K
Inductance: 2.75Henries
Custom Shop Fat '50s Neck Pickup
DC Resistance: 6.0K
Inductance: 2.4Henries