This exquisite door set features a genuine porcelain knob with an appealing Victorian rosette. It also features a design from the Yale & Towne era of 1884 and comes with a solid brass construction. The porcelain knob measures 2 1/8 inches in length (approximate) with a rosette that is 2 3/4 inches in diameter. This style is available as a double sided dummy knob (2 fixed knobs), functional passage (non-locking) and functional privacy (locking) sets. Constructed from solid brass and hand finished. Functional door knobs come with a standard 2 3/8 inch back set, or you can request a 2 3/4 inch back set at no extra charge. This particular product has a lead time of approximately 2 to 4 business days.