Defiant 1-3/8 in. x 2-3/8 in. Single Cylinder Satin Nickel Deadlatch Lock The Defiant Single Cylinder Deadlatch Lock features a 5-pin tumbler with hardened steel pins and a latch hold back which prevents you from locking yourself out. Designed for 1-3/8 in. to 2-3/8 in. thick doors. Easy to install with included fasteners. High Quality Fast Shipping Customer Support Single Cylinder Deadbolt Deadlock Polished Brass Entrance Door Lock (2) Keys Polished Brass Finish in Box with (2) Keys KW1 keyway, all keyed alike Included Single Cylinder Deadbolt Deadlock Polished Brass Entrance Door Lock (2) Keys Polished Brass Finish in Box with (2) Keys KW1 keyway, all keyed alike Includes installation instructions, drill templates and mounting hardware For use on doors 1 3/8" to 1 3/4? Backset adjustable from 2 3/8" to 2 Our entry door knob is brass plated and includes installation instructions, drill template and mounting hardware. These all keyed alike lock sets fit doors from 1-3/8" to 1 3/4? in width with a backset adjustable from 2-3/8? to 2-3/4?. It features the traditional tulip-shaped design with a keyed door knob on the outside and push / turn knob lock inside. Our lock sets are a perfect choice for use by REO contractors and in the mortgage field service industry.