Double Action: Double action spring hinges allow you to push a door in both directions and provide the desired closing speed for a variety of swing door applications. Applications: This double action spring hinge is suitable for freestanding doors, bar doors, cabinets, wardrobe doors, closet doors, swing doors, etc. Black Nickel Plating: Multi-layer processing, black nickel plated surface, rust-free, easy to carry, and corrosion-resistant. This automatic door spring hinge features exquisite workmanship. Durable Materials: The double action spring hinges are made of premium stainless steel, which is compact, durable, tough, and reliable, with a long service life. Accompanying Tool: The set includes screws and an adjustment tool; you can install them according to your needs. Easy and effortless installation.