The listing is for one PANASONIC x2 capacitor ONLY "foot pedal not included", to replace the blown ones in your vintage foot pedal."Instructions supplied,sent by ebay messages".
The replacement capacitor is a brand new modern updated design from PANASONIC not cheap rubbish.
The ECQUAAF104M is a radial leaded metalized polypropylene Film
Capacitor with flame-retardant plastic case and non-combustible resin.
In accordance with UL/CSA and European safety regulation class X2.
The old fashion one will most likely be a single capacitor with a wire on each end or a pair one on either side of the unit connected together.
If
you have smoke or crackling coming from the foot pedal or it is stuck
on a single speed or just stops working it is likely to be the
capacitor. capacitor looks like a AA battery with a wire on each end .