3 Inch Diameter Solid Brass Knobs 2 1/2 inch Diameter Round Solid Brass Rosettes 2 3/8 Inch Backset Included (2 3/4 inch available at request) Passage & Privacy Sets Include All Functional Hardware Needed Double Dummy Set is Non Functional Mounting Hardware Included During the Victorian era, there was a revival of interest in classical and historical motifs. Lions became popular decorative elements in furniture, fixtures, and hardware, including door knockers, handles, and doorknobs. These lion-themed designs reflected the prevailing tastes for ornate and symbolic embellishments. The Passage and Privacy sets each come complete with interconnected rosettes and all necessary hardware for convenient installation of doorknob sets. For decorative purposes, our Single and Double Dummy sets feature surface-mounted rosettes. The standard backset provided is 2 3/8 inches, with the option to substitute it with a 2 3/4 inch backset at no additional if requested at time of purchase. All measurements are approximate. This product has a processing time of about 1 to 2 business days before it is shipped.