The Cornerstone Round hinges are a reliable and durable solution for any gate with round posts around your home or yard. The Cornerstone Round hinges are heavy duty hinges manufactured from high quality, durable polymer and stainless steel. These hinges are vertically and horizontally adjustable, tension adjustable and self closing. Made for gates with round posts up to 75 pounds, the Cornerstone Round hinges are heavy duty and will not rust, corrode or sag. Each package contains 2 hinges, enough for 1 gate. The Cornerstone Round hinges are for round gate frames from 1-3/8 inch to 1-5/8 inch diameter and gate posts from 1-7/8 inch to 2-7/8 inch diameter. They will not work on square posts. The gate gap must be between 1/8 inches to 1-3/8 inches. The tension determines how fast or slow the gate will close and can be easily adjusted using the .25 inch allen wrench provided. These hinges are low maintenance and may only require some adjustment or tightening throughout their usage on the gate. All fasteners are included with the hinges as well as detailed installation instructions. The Cornerstone Round hinges come with a 1 million cycle warranty, so you can feel confident they will stand the test of time. If you have any questions, feel free to message us!