This product is a self-locking spring hinge, mainly made of safe and gentle steel and nylon materials. It is strong and durable and can serve you for a long time. It is a very professional and convenient self-locking door hinge. It is made of craftsmanship, simple structure, easy installation, can better save time and energy, you can use it with confidence. Features -Color: Silver. -Material: Steel, Nylon. -Size: About 3.50X2.80X1.10cm/1.38X1.10X0.43inch. -It is made of sturdy and durable materials, which are not easy to rust or wear, ensuring quality and service life. -Fine workmanship, excellent texture, durable for a long time, and will not break easily. -The door can be opened automatically by applying pressure to the door itself, which is very convenient. -Suitable for kitchen cabinets, bedroom cabinets, leisure cabinets, attic doors, hoods and other products. -Easy to install, stable and practical, it will be your excellent hinge choice. Package list: 5 x Self-Locking Hinges