The Mighty Mule Pin Lock for Gate Openers is the perfect accessory for enhanced security on your gate opening system. The Pin Lock helps provide security and peace of mind by preventing a gate opener arm from being removed or stolen and allowing unwanted access to the property. The Pin Lock substitutes for the clevis pin at the front end mount of all models of Mighty Mule swing gate openers, it does not allow the clevis pin to be removed from the gate without a key to the lock. The pin lock comes with 2 keys that will allow quick release of the opener when needed. Backed by a 1 year warranty.