Specifications 1 Shell Material Thermoplastic2 Shell Color Major in Black3 Size 3 7cm 4cm 23cm 1 46in 1 67in 9 06in Features 1 This is about a HID Xenon D2 D4 Light Base Adapter which convert a factory stock Xenon Light Bulb sizes D2S D2C C2R D4S D4C D4R to fit most aftermarket HID Ballast in the market 2 Save your money on replacing an expensive factory Xenon ballast while your stock Xenon Blub still in good condition 3 Work with 35W 55W HID system 4 All connections and terminals are crimped and shrink wrapped with high quality heatproof thermoplastic tubing 5 High Capacity wire are capable to withstand voltage and current 6 Seal rings guarantee waterproof How to Install 1 Connect the small male connectors of the adapter to the female connectors of the aftermarket HID ballasts 2 Connect the small female connectors of the extension to the male connectors of the aftermarket HID ballasts 3 Connect the big red socket to the stock Xenon Bulb 4 Easy to use as all standard terminal connector are well attached 5 Different models are available in our store Package Includes 2 x D2 D4 Adaper