A brass window stay is a type of window hardware that is commonly used to hold windows in a fixed or open position. It is made primarily from brass, a metal alloy composed of copper and zinc, which gives it a distinct golden appearance. Brass window stays are typically designed to be durable and long-lasting. They are often solid in construction, meaning they are made from a single continuous piece of brass. This solid construction lends sturdiness and strength to the window stay, allowing it to securely support the window in place.