Single cylinder deadbolt with Smart Key rekeying. Lock is rekeyable in less than 30 seconds without removing the lock from the door. Includes SmartKey tool. BumpGuard side locking bar technology replaces a traditional pin and tumbler design to protect against lock bumping. Grade 1. Round corner adjustable latch. Fits 2-3/8″ & 2-3/4″ backsets. Ball bearings to prevent drill out. Concealed screws. 4 keyed alike. Clear pack.