Kwikset’s largest-selling deadbolt in America, the 660 series deadbolt provides tough, effective protection at an affordable price.
– Features adjustable latch & deadbolt to fit all standard door preparations
– ANSI/BHMA Grade 3 Security
– Add to a keyed knob or lever for additional security
– Lifetime mechanical warranty
– Featuring SmartKey Security™ re-key technology. The lock you can re-key yourself in seconds
– SmartKey cylinders feature a stainless steel side locking bar, racks and pins for increased strength and security
– Patented side locking bar technology offers improved security by protecting against lock bumping, an attack technique used to defeat conventional pin & tumbler locks.