Antique Knob Retrofit Kit to Fit Modern Pre-Drilled Doors. If you have the Antique Knobs, Tubular Latch and Spindle this is your Retrofit kit. (Brushed Nickel) DIY very affordable KIT to install Antique Knobs or reproductions in modern drilled doors. INCLUDES Two 2-1/2 Rosettes with matching #6 wood screws, Two handmade Wood Adapters, SOLID BRASS ROSETTES (rather than plated steel) 2-1/2 diameter with premium finish A LITTLE patience and you will have great results! GUARANTEED satisfactionPersonal customer service