Footswitch - SPST, Momentary, Solder Lugs, Soft Switch SPST (single pole, single throw) normally open, Off-(On) momentary footswitch. Solder lugs, soft switching. These high-quality switches are great for upgrading the footswitch in relay-based pedals as well as tap tempo applications. Depressing the switch shorts the lugs together and when the switch is released it returns to its non-connected state with no click. SPST momentary switch Soft, silent switching with no click Normally open operation Solder lugs Nuts and washer included