Features: Exquisite craft, product was beautiful, good finish and nice; High quality stainless steel, compact, durable; Multi-layer processing, to ensure products do not rust, easy to wear, corrosion ability; Widely used for free gate, bar counter doors. Events door hinge with double door function; Bearings with adjusted intensity, for a variety of materials swing door. Specifications: Material: Stainless steel Size: 4 inches Thickness: 1.5MM Suitable Door Thickness: 2.0-4.2cm Single bearing: 15Kg Package include: A Pair 4" Double Action Spring Hinge (Delivery Screws)