Secure your fence or railing gate with the Keystone 2-sided gate latch. Manufactured from high quality, durable polymer, the Keystone latch will not rust or corrode over time. Featuring a sophisticated, traditional design and superior reliability, the Keystone latch will work on vinyl, wood or metal gates. The latch 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 either left or right swinging gates; see installation instructions for details. Everything you need for installation, including instructions, a marking template and all fasteners are included. The Keystone latch fits on square gate posts up to 5 in. and requires a gate gap between 1/2 in. and 1-3/4 in. It is compatible with both single and double gates, but will require a drop rod (not included) with double gates. The Keystone latch comes with a 1 million cycle warranty so you can feel confident it will stand the test of time.