These sash window weights are a durable and practical solution for anyone looking to balance their windows. Made of cast iron, they come in 5,5 lb weight .They're perfect for anyone looking for a reliable and long-lasting way to keep their windows functioning smoothly. Whether you're a DIY enthusiast or a professional tradesperson, these sash window weights are a great addition to your toolkit. They're easy to install and will help to ensure that your windows operate smoothly and efficiently. So why wait?