HEAVY DUTY DOOR HINGES: 4inch x 3inch, square corners,thicker stainless steel material - We recommend you to apply minimum 3 hinges for each interior door and minimum 4 hinges for heavy duty doors/gate.EASY TO INSTALL, SIMPLE AND BEAUTIFUL: Compared with traditional hinges, it is not necessary to groove in the door and door frame and can be installed directly.MADE OF PREMIUM STAINLESS STEEL: Genuinely adopting thick stainless steel of high quality, the door hinge features fastness. Antirust treated surface ensures excellent anticorrosion, firmness and durability.HIGH-QUALITY BEARING, SMOOTH AND QUIET: Applying superior bearing, the door hinges is capable of rotating 360 and difficult to get stuck or stagnate, ensuring completely silent operation.PACKAGE INCLUSION: You will get a box of 6 door hinges comes with screws which have the same color as the hinge.These hinges can be installed on wooden doors, painted doors, aluminum alloy doors, cabinets, wooden boxes and other indoor and outdoor areas.