2 1/2 Inch Solid Brass Georgian Roped Knob (Antique Brass Finish Shown)- measures 2 3/8 inches in diameter with a projection of 3 inches. The rosette measures 2 1/2 inches diameter. Comes complete with mounting hardware. 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.