Foot switch 4-pole latching. Used in early Black Label True Bypass pedals (produced 2007-2008). P/N: 9401.

Foot switch 4-pole latching. Used in the first batches of the Black Label True Bypass pedals, launched in 2007-08. Switch type replaced by another in 2009.
P/N: 9401. (check the type in your pedal before ordering. Your spare switch need to match the one in your pedal)