Kwikset 98160-002 816 Key Control Single Cylinder Door Lock Deadbolt featuring SmartKey Security for Master Keying Multi-Family Housing and Tenant Key Control in Satin Nickel - Walmart.com
Ultra Security Satin Nickel Single Cylinder Multi-Family Deadbolt – Exterior and Interior Lock, Fits Door 1-3/8" To 1-3/4" Thick, 2-1/8" Installation Hole with 1" Throw (Nickel Finish, 1 Pack) - Walmart.com
Mul-T-Lock MT5+ Hercular Door Lock Review - Consumer Reports
Mul-T-Lock Cronus High Security Grade 2 Single Cylinder Dead-Bolt w/Thumb Turn 2-3/8 or 2-3/4 Adjustable Backset for Commercial and Residential Metal Or Wood Doors (Stainless Steel) - Amazon.com
MUL-T-LOCK MTL600 Cylinder for SCHLAGE/ARROW Single Cylinder Deadbolt @ MUL-T-LOCK-ONLINE.COM
Mul-t-lock Hercular Single Cylinder deadbolt With Thumb turn — Countryside Locks
Mul-T-Lock Interactive+ Cronus High Security Grade 2 Single Cylinder Dead-Bolt w/Thumb Turn. Commercial or Residential Metal or Wood Doors (5) Stainless Steel - Two Keyed Alike) - Amazon.com