Just for a little clarification… we have had some people place orders for a knobset thinking that it is just knobs which they can use to attach to old style hardware.?We do not sell restoration hardware parts. If you have old doors that need replacement hardware parts, you’ll need to check with a company that reproduces those parts. At this time all of our hardware knobsets are a standard fitting Door Knob or lever handle set with mechanism, strike plates, knobs or levers for boths sides of the door and mounting hardware. We do not sell individual parts at this time. Also, keep in mind that if you do order a knobset for use on an older door, most likely you will not be able to use the parts to accomodate the old hardware parts.