For Stratocaster, any positionHigh output true single-coil for warm instruments. Recommended for country, pop, blues, classic rock and heavy rock. This is the next step up from the SSL-5 and SSL-6 with more sustain, fullness, and output - and less treble response. The raised flat Alnico 5 pole pieces are taller for a stronger and deeper magnetic field. Extra coil windings provide extra power making this pickup great for heavier music styles. White cover included. For heavier and brighter-toned instruments with ash or alder bodies. Works well with maple or rosewood fingerboards.Bridge and neck postions are regular. Middle position is reverse wound, reverse polarity (RW/RP) for hum-cancelling in positions '2' and '4' on a Strat 5-way switch.