- Self-closing spring-loaded hinges, 4 inches in size, designed for durability with robust steel construction. - Ideal for doors, gates, entertainment centers, wood fences, wide entrances, and metal doors. They ensure doors close automatically, preventing slamming. - Fits doors that are 1-3/4 inches thick, with a hinge thickness of 2.7 mm for added strength and stability. - Each hinge features 8 holes for easy installation on wood doors, standard doors, screen doors, master closets, basement doors, bathroom doors, and laundry rooms. - The matte black finish and full mortise tenon design enhance aesthetics while providing smooth, automatic closure. - Dimensions for each exterior door hinge are 4" x 4" with a thickness of 2.7 mm. - Perfect for various settings: apartments, hotels, offices, hospitals, schools, dormitories, and more. - Constructed from high-quality stainless steel (201/304), these hinges resist rust and maintain their appearance over time. - Thickened blades extend service life, and lubricated bearings ensure quiet, smooth operation. - Applications include securing interior and exterior doors in residential and commercial spaces, enhancing convenience and safety.