MDL XPP Polypropylene 1.0mfd 400V | Madisound。Get Jantzen Capacitor 2.2uF 400VDC Standard Z-Cap Series Metalized。Shop ClarityCap Capacitor 12uF 250Vdc PX Series Metalized。HELIX 18chDSPAMP HELIX V-EIGHTEEN DSP | サウンドエボリューション。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