Kwikset Smartkey technology allows you to rekey your locks in seconds by using the Kwikset learn tool Simply insert the operating key and learn tool, then insert any Kwikset 5-pin pre-cut key and the lock is rekeyed Saves time and money for lock removal and re-keying Bump Guard technology and drill resistant cylinder for improved security Grade-2 security, 5-pin cylinder and 6-way adjustable latch Smartkey locks can not be master-keyed