These corner plates are made of steel and are zinc plated, making them durable and resistant to corrosion. The pack includes 6 plates, each measuring 75mm x 75mm, perfect for securing and reinforcing corners in various DIY projects around the home or furniture. Ideal for adding stability and support to shelves, cabinets, or any other structure that needs a strong and reliable corner plate. new old stock see my other listings for different items colours and sizes