JANTZEN-84233__25864.。Jantzen 8030 2.7uF 160V Compact MKT Metalized Polyester Film Capacitor。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