Schlage S51PD SAT 626 16-203 10-001 KD C Tubular Lock, Entrance Function, Saturn Design, Satin Chrome Finish Engineered for long life and optimum durability Reliable performance in light commercial applications like small hotels, laboratories and office tenant spaces, as well as apartment buildings Easy to install, service and maintain Entrance Lock - Outside lever locked and unlocked by key or by turn-button on inside lever