Our cabinet hinges are made of high-quality steel to ensure durability and stability, and are corrosion and rust resistant. 165/170/175/180 degree heavy duty cabinet hinges are designed for thick doors (16-45mm) - but only for frameless cabinets. Cabinet hinges adopt a hidden hydraulic design. This soft-close cabinet door hinge has a built-in damper to help the door close smoothly and quietly. This hidden hinge is universal. Adjustable screws adjust the hinge between 135-170 degrees. Easy to install, just a screwdriver required. You can easily fine-tune the opening angle of the cabinet for a perfect fit. Cabinet door hinge compatibility integrates seamlessly with most furniture designs. Suitable for American-style cabinets, European-style frameless cabinets, shoe cabinets, bookcases, wardrobes, and drawers. 4 Pack hidden cabinet hinges and screws. If you are not satisfied with our products, please feel free to contact us. We can give you a full refund.