2 Pack Door Security Bolts Tubular Mortice Latch Dead Bolt Mortice Lock with Keys and Screws for Internal Doors Hinged Doors Wooden Doors and Windows : Amazon.co.uk: DIY & Tools
Defiant Satin Nickel Deadbolt Lock with Night Latch, Holdback Button Single Cylinder Rim and Two Keys - Heavy Duty Defender Security Door Lock Hardware : Amazon.co.uk: DIY & Tools
What Are Deadlocks, Deadlatches & Deadbolts (& Why You Need Them)
Deadbolt Additional Home Door Cylinder Lock Rim Dead Bolt Night Latch Thumb Turn | eBay
Schlage Part # 12-288 626 - Schlage B Series 12-888 Universal Square Corner Satin Chrome Replacement Deadbolt Latch - Cylinder Accessories - Home Depot Pro