JENSEN-87761__95274.1717480011。Unique Bargains 10pcs 4.7uF 100V Non-Polarized Electrolytic。MDL XPP Polypropylene 4.7mfd 250V。Jantzen Audio 4.7uF 800V Silver Z-Cap Crossover 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