Secure your fence or railing gate with the Keystone 2-sided gate latch. Made from high quality, durable zinc diecast metal the Keystone latch will not rust or corrode over time. The Keystone gate latch features a sophisticated, traditional design and provides superior reliability. The Keystone latch will work on vinyl, wood or metal gates, comes with 4 keys and is keyed alike, so if you purchase multiple latches the same key can be conveniently used on all of them. It can be re-keyed to match a 5 pin key, if you prefer to match the latch to your house key. The Keystone latch can be installed to accommodate both left or right swinging gates; see installation instructions for details. The Keystone latch comes with everything you need for installation, including instructions, a marking template and all fasteners. The Keystone latch fits on gate posts up to 5 inches and requires a gate gap between 1/2 inch and 1-3/4 inches. It will only work with square gate frames. The actual dimensions of the Keystone latch are 1-1/2 inches wide, 5-1/2 inches tall and 3 inches deep. The Keystone Latch is compatible with single and double gates, but will require a drop rod (not included) with double gates. Search ASIN: B06ZY8F2HT for a lockable drop rod. The Keystone latch will last over 1 million cycles so you can feel confident it will stand the test of time. Let us know if you have any questions.