These casement window locks are left handed and feature an anti-tarnish brass finish. They are supplied with two keys, and brass finished screws for proper installation. These window locks also include two keepers, one flat and one standard. The flat keeper is designed to surround a mortice in your timber window frame and is set at a slight angle to help hold your outward-opening window firmly closed. The standard keeper will fasten an inward-opening timber window closed. The screws are included for either keeper for easy installation. The latch and all components are finished in the lustrous polished brass for a unified design.