Tough Guard Double-cylinder Deadbolt Door Lock Set

Protect your home, cottage, and shed from intruders for added security and a better peace of mind.

A double-cylinder deadbolt requires a key on both the outside and inside. Its main advantage is on doors with glass panels or windows close to the lock. With a normal single-cylinder deadbolt, a burglar could potentially break the glass, reach inside, and turn the thumb-turn. With a double cylinder, reaching through the broken glass doesn't unlock the door because the inside still requires a key.

Advantages of a 5-pin brass pin-tumbler cylinder:

• More key combinations: Five independently positioned pins create considerably more possible key patterns than a simpler 3- or 4-pin cylinder
• Better resistance to casual picking: An attacker has to correctly position all five pin stacks before the cylinder will turn
• Brass construction: Brass is corrosion-resistant, machines accurately, and tends to provide smooth, reliable movement between the pins and cylinder