WHY DO YOU NEED BALL BEARING HINGES? - Unlike plain bearing hinges, ball bearing hinges are permanently lubricated to ensure smooth door operation and are designed to withstand frequent use with heavy doors. These hinges offer long-lasting durability, quiet performance, and smooth, effortless door movement. Eliminate annoying squeaks and enjoy reliable, easy door operation.COMMERCIAL GRADE STAINLESS STEEL - These brushed nickel door hinges are constructed from heavy-duty stainless steel, ensuring long-term reliability without rust or fading. Built to endure daily wear and tear, they provide excellent strength and durability. The hinges feature an electroplated coating for added protection. With a tested service life of over 10 years and rated for more than 50,000 cycles, these hinges are built to last.MEETS YOUR SIZE AND PACKAGING NEEDS - The hinges have a standard size of 3.5 x 3.5 inches and are compatible with most doors. Each package includes 3 hinges and 21 screws for easy installation. Each hinge is individually wrapped to prevent scratches. When installing, please measure your door frame to ensure compatibility with the hinge leaf, which measures 1.4 inches (35.5 mm) in width and 0.1 inch (2.5 mm) in thickness.SUITABLE FOR A VARIETY OF APPLICATIONS - Made from high-quality commercial-grade stainless steel, these heavy-duty hinges are suitable for both interior and exterior use in residential and commercial settings. Offering excellent stability and flexibility, they work with both left and right opening doors. Two hinges can support up to 66 lbs (30 kg), while three hinges can support up to 110 lbs (50 kg), providing strong support for doors and gates.Color: Silver Material: Stainless Steel Package Contents: 1 set of 3.5-inch door hinges (3 hinges and 21 screws) Note: Light reflection and differences in display screens may cause slight variations in color compared to the actual product. Measurement may vary by +/- 1-3 cm.