These antique knobsets are sold as KNOBS ONLY with a spindle! Interior functions (latches, strike plates, etc.) are not included with these knobsets. This type of vintage door hardware is most often used when you have an older home that needs replacement knobs but not necessarily new functions. These knobs are meant to replace your old existing knobs that use the spindle and set screw design, but we do not guarantee they will fit as there are many brands of hardware that each have their own design. Please take measurements of your existing antique hardware to make sure you order the right size spindle. Nostalgic Warehouse Antique hardware is subject to a 20% restock fee.