The Brinks 2101-109 Tulip Bell Style Keyed Entry Interior Door Knob in Antique Brass is a stylish and secure option for various types of doors in your home. This round door knob, made of brass, features a keyless entry system that provides convenience and peace of mind. With its universal/reversible design, it can be used on patio, interior, front, front entrance, room/pass, security, and balcony/terrace doors. The antique brass finish adds a touch of elegance to your home's décor while the included key ensures your entryway remains secure.