Prime-Line U 9861 Sliding Door Keyed Lock, Push-In &ndash; Replace Broken Parts and Add Additional Home Security, Painted Diecast Case, Auminum Finish INCLUDES  This sliding door keyed lock adds additional security to your sliding door. It includes 1 lock with 2 strikes, 2 ferrules, 2 keys and installation screws. KEYED  This keyed sliding door lock unlocks only with the included keys. Two keys included, uses Yale Y-13 keyway. ADDITIONAL SECURITY  This sliding door lock features a hardened steel bolt for push button locking that helps prevent the prying or lifting of your door, keeping your home safe. EASY INSTALLATION  Installation is quick and easy and all parts are included! It makes for a great weekend DIY project. DURABLE, STRONG CONSTRUCTION  With a painted diecast case and a hardened steel bolt for push button locking, this heavy duty patio door lock is strong and built to last.