The perfect hinges are made from durable metal material and comes in a pack of 20 pair 40 units count. Variable Flush Overlay with Self-Closing Spring, Every Satin Nickel cabinet hinges is tested for durability, strength, and quality. PERFECT for cabinets, cupboards, doors, furniture, etc... in your bathroom, kitchen, bedroom, and any other room you can think of! We aims to provide quality products, as described, shipped quickly, with complete customer satisfaction.