Universal Hardware's Commercial 2-3/4 in. Heavy Duty Privacy Lever in Satin Chrome is constructed with a robust cylindrical locking mechanism. This lock is designed for heavy use doors. It is extremely durable mechanically, as well having a durable finish. This lock is as versatile as it is durable and can fit residential and commercial doors of multiple thicknesses. The privacy function works great for doors that need to be locked from the inside, and unlocked from the outside in the case of an emergency.