Add an extra level of security to your patio doors - without compromising durability or style - with this locking surface mounted bolt. Part of the collection of satin chrome door hardware from Australian brand, Tradco Hardware, this patio door bolt is made of solid brass and plated in chrome, which is brushed to provide a satin, tarnish-resistant finish. It is intended to be surface mounted onto the face of the door and is lockable with the two supplied keys - these can be keyed alike or differently on multiple orders.