SOSS Invisible Hinges are designed to give dependable operation for years. These Standard hinges are made of high strength plated steel and heavy duty zinc alloy castings. When installed they are virtually hidden from site when in the closed position. Invisible hinges are used in custom cabinetry applications in restaurants, homes, and offices and bi-fold applications for creating a clean look. These Hinges open a full 180 degrees and are a single action hinge. The only limitation to SOSS Invisible Hinges is the imagination of the designer! Features: Invisible from either side when closed Moving pivot point remains inside hinge during travel Deep mortise of hinge assures a strong installation Zinc Body with Steel Pins and Links For Wood or Metal Applications Includes Screws 180 Degrees When Opened Minimum Door Thickness: 1-3/8" Heavy Duty Application SOSS Invisible Hinges are a best seller. Create superlative environments unencumbered with unsightly hardware. Soss products will help you to create an environment that is both unique and beautiful. They provide a vast range of sizes and styles! Soss hinges also can not be tampered with because of the simple fact they can not be seen.