Each set contains all the hardware for knobs on both sides of One French Door: two Depression Crystal Glass Knobs are 2" in diameter, one knob is secured to spindle at the correct length for standard 1-3/8 to 1-3/4 inch thick doors, two stamped brass 2-1/2 inch Rosettes, two Heavy Duty Dummy Mounting Brackets ready to installed in you French doors. Just drill on through hole and install. This system allows you to line up both sides of a door perfectly and is much stronger than the old surface mount brackets. Each set contains all the hardware for knobs on both sides of one French Door. Simple to install: 1. Drill 1/4" Through hole, 2-3/8" backset, 36" from floor. 2. Install one stop bracket and tap for equal length of spindle on both sides 3. Install the other side and then install the backplates and knobs. Full Instructions will be included. Brand New-Reproduction Products.