Satin finish Door Knob

This is a satin nickel finish lever-style door handle set. It is designed to operate a latch mechanism to open and close a door.  - Function: Can be a passage (non-locking), privacy (push/turn button from inside), or keyed entry function depending on the internal mechanism. 
 - Material: Features a durable metal construction, likely a zinc alloy or stainless steel. 
 - Finish: Has a brushed or satin finish, commonly referred to as satin nickel or stainless steel. 
 - Installation: Designed to be installed through the door with bolt-through fixings for secure attachment