Single Cylinder Function: Baldwin's single cylinder handleset has a keyed cylinder on the exterior and a thumbturn on the interior. Unlocking and locking the deadbolt is done by either a key on the exterior or via the thumbturn on the interior. This handleset includes both the interior and the exterior for a complete entrance solution.Right Handed: Handing is determined by standing on the outside of a room, facing the door, and noting on which side the door hinges are located. This handle is right handed, and so when standing outside of the room and facing the door the hinges will be on your right.Solid Brass Construction: Baldwin Reserve Series products are constructed from solid brass - providing a more luxurious, higher quality feel than door hardware made with lesser metals. When you hold a Baldwin product in your hand, you will immediately notice the difference that solid brass makes – it is heavier, stronger, and smoother than most of the door hardware on the market today.