Hood pins, also known as bonnet pins or cowl pins, are mechanical fasteners used to secure the hood or bonnet of a vehicle. They are typically installed in pairs, one on each side of the hood, and are used to prevent the hood from accidentally opening while the vehicle is in motion. Hood pins are typically made of metal, such as steel or aluminum, and are designed to be strong and durable. They are also often equipped with a spring or other mechanism to help keep them in place.
Hood pins have been used on vehicles for over a century, and they are still commonly used on race cars and other high-performance vehicles today. They are also becoming increasingly popular on street cars, as they can add a touch of style and personalization to a vehicle. In addition to their functional benefits, hood pins can also be used to improve the aerodynamics of a vehicle by reducing drag.