HEAVY DUTY STEEL - Our non mortise hinges are made of rugged stainless steel, adopting thick stainless steel of high quality, which is made of precision, high strength, not easy to rust. The surface of nickel hinges has been treated with rust prevention to ensure excellent corrosion resistance, robustness, and durability. DETAIL SIZE AND VALUE PACKAGE - The no mortise hinge size is 4 x 3 inches, the thickness is 0.01 inch/2.5mm. The screw size is 0.53 x 1 inch. With high-end and solid screws, humanized design, the hinges do not need to be slotted, has strong load bearing and thick bearing. LUBRICATED BALL BEARING - The Ball bearings ensure smooth, even, no-wobble, and no-scratch movement, under the action of them, no noise will be made when opening or closing the door. The mute brushed nickel hinges for doors, ensuring completely silent operation, eliminate the annoying buzz at your door. WIDELY APPLICATION - Our bifold door hinges are easy to install, do not need to groove in the door and door frame, and can be installed directly. With strong bearing, the door hinges satin nickel is suitable for cabinets, windows, and other retro and new furniture around the house. Perfect for various wooden and metal doors.