I´m thinking about buying an Aldrich bridge hb pickup, but don´t know if I should buy the 50mm or the 53 mm version. What´s the difference between these two?
53mm is generally for Tremolo equipped guitars (F for Fender). 50 mm is generally for hardtails. Some use a 53mm for bridge and 50mm for neck on Tremolo equipped guitars.
Drewiv I always thought F spaced was for Floyd Rose. Learn something new everyday. The pickups are the same size and can be used in either they just have different spaced pole pieces I believe.