NU-SET 3 x (F-E-26D + 70026D) KA Fremont 3 Sets of NuSet Keyed Alike Entry Door Knob with Single Cylinder Dead Bolt Combo in Satin Chrome Finishing 3 nuset entry door knobs and 3 single cylinder dead bolts in Satin Chrome finishing These locks come keyed alike. One key opens all locks Door thickness: standard (1-3/8" to 1-3/4") Backset: standard (adjustable 2-3/8" or 2-3/4") Single cylinder deadbolt: it require a key to unlock and lock the door from the outside