Dayton Audio DMPC-3.0 3.0uF 250V Polypropylene Capacitor。M's Line homepage。Copper Foil Paper & Wax Capacitors 400V - Jupiter Condenser。Dayton Audio - DMPC-90 90uF 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