Upgrade your vehicle's headlights with our 4 Inch By 6 Inch Diamond Cut Rectangle Headlight Conversion Lens. This lens is perfect for those looking to upgrade to HID or LED kits and replaces H4666 headlamps. It fits H4 HID, LED, and halogen bulbs and is sold in pairs. This lens is practical and fits most makes and models, making it a great choice for anyone looking to improve their vehicle's lighting.