Capacitor Module (Factory edition) - HOBBYWING North America。MDL XPP Polypropylene 4.7mfd 250V。M's Line homepage。Dayton Audio DMPC-2.2 2.2uF 250V Polypropylene Capacitor。This is a Helix capacitor.I've decided to sell it as I won't be building a new audio system.I estimate it was used for about 3 months.I barely drove the car with the audio system installed.It comes with a holder, but screws are not included.Thank you for your consideration