Aircraft latch lock Solid aluminum alloy spring Automatic plug Push pull doors and windows Self closing casement window lock Wooden door bolt alumin gray.Aircraft latch lock Solid aluminum alloy spring Automatic plug Push pull doors and windows Self closing casement window lock Wooden door bolt alumin Enhance door security with a high-quality aluminum alloy self-closing latch Spring-driven mechanism ensures smooth and automatic operation for doors, gates, and windows Easy to install with in