Made for modern doors - Victorian era splendor returns with the 2 3/8 inch diameter crystal and solid-brass construction door knob reminiscent of turn-of-the-century prosperity. Elegant in its simplicity, the practical door hardware is suitable for any room or makes a stunning, decorative accessory. The genuine crystal clear glass knob has a projection of approximately 2 1/8 inch. The overall projection of the knob and standard rosette is approximately 2 3/4 inch and fits modern doors with a 2 1/8 inch bore hole. The attractive door knob shown has a polished chrome finish but is also available in polished brass, antique brass, oil rubbed bronze, and brushed nickel. The dummy door knob is a fixed knob with double rosettes and is commonly used on French-style or bi-fold doors. This style is available as a single sided dummy knob (1 fixed knob), double sided dummy knob (2 fixed knobs), functional passage (non-locking) and functional privacy (locking) sets. 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.