Kwikset SmartKey Single Cylinder Deadbolt 993SQT 26 SMT CP Features adjustable latch & deadbolt to fit all standard door preparations. BHMA/ANSI Grade 2 certified deadbolts. Add to a keyed knob or lever for additional security. Lifetime mechanical and finish warranty. Featuring SmartKey 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.