PRIME LINE PRODUCTS,Prime-Line Products E 2297 Solid Brass Vintage Style Door Knobs, 2-3/16 in. Outside Diameter, 2 Set Screws,Prime-Line Products,E 2297" /> This set of round knobs is used indoors with old style mortise lock sets Features 2-3/16 in. outside diameter knobs with 1-3/4 in. projection and 17/64 in. x 3-1/2 in. square spindles Polished brass finish Solid brass construction with steel spindle