The Kwikset 660 deadbolt features SmartKey Security, allowing you to re-key the lock yourself in seconds without removing it from the door. The patented side-locking bar technology replaces traditional pins and tumblers for improved resistance to lock bumping, picking, and drilling.

• Single cylinder - key outside, thumb turn inside
• SmartKey Security - re-key in seconds with included Learn Tool
• BumpGuard protection against lock bumping
• Antique Brass finish
• Adjustable backset: 2-3/8" to 2-3/4"
• 1" deadbolt throw
• Includes 2 keys and round deadbolt strike
• Interchangeable faceplates - round and square corner
• ANSI/BHMA Grade 3 certified
• Lifetime mechanical and finish warranty