Easy to install: The adjustable gate hinges are designed for wood gates, vinyl fence gates, and metal gates. Use the included self-tapping metal screws for installation on your vinyl fence. For wooden gates, wood screws must be purchased separately. Strong bearing capacity: The heavy-duty wood gate hinges support doors up to 100 inches wide and weighing up to 100 pounds. These vinyl gate hinges help keep the door securely closed, minimizing gaps and improving security. Self-closing gate hinges: The hinges offer precise adjustment for smooth door operation. Door misalignment or distortion can be corrected by adjusting the hinges, enhancing both appearance and durability. The spring can be adjusted to achieve a desired self-closing speed. These self-locking gate hinges are compatible with a wide range of fence door sizes. Strong and durable: Constructed from heavy-duty steel, these self-closing gate hinges offer enhanced strength and superior corrosion resistance for long-term performance. The black powder-coated finish extends hinge life. The vinyl gate hinges are built to withstand prolonged use and harsh weather conditions while maintaining their condition. Adjustability and stability: These 90-degree adjustable hinges allow for a gap range of 0.23" to 1.25" between the gate post and gate frame. The extended threaded rod provides increased adjustability and stability. Use the included swing adjustment tool with the series of small holes at the top of the hinge, placing the stop pin in the desired hole to secure position.