Installation Specification: Cup diameter is 35mm; Cup depth is 11.5mm, Screw holes distance is 45mm; Opening angle is 105 degrees, suitable for most cabinet door styles. Each cabinet hinge comes with 2 easy-on dowels and 3 self-tapping wooden screws to a perfect fit. 4D Adjustable Upgrade: 4D hinges can adjust the cabinet door just by turning a screwdriver (Vertical, Horizontal, Depth, Closing Speed), which make sure that your new custom-made cabinet doors don't sag, align properly, and open and close smoothly; Closing speed can be adjusted at within 0-7s. SOFT CLOSE CABINET HINGE: Each overlay concealed cabinet hinge includes a built-in POM damper, Reduced closing speed prevents noises from the kitchen and prolongs the life of doors, cabinets, and hinges. Double Electroplated: The material of our overlay cabinet hinges is high quality steel and nickel plated finish and brass plated bottom, and perfect for kitchen cabinet doors, wardrobes, and TV cabinets, bookcases, wine cabinets,