The Randall and Adams sets - what's the difference? One quarter of an inch.The Randall's 2 rosette was common on 1920s, ‚¬Ëœ30s, and ‚¬Ëœ40s hardware. However, its small diameter won't cover "pre-drilled" doors with a 2-1/8 bore.Instead, try it on old doors with their original mortise hardware, or better yet, on new undrilled doors. Our smaller Fluted and Round Crystal, Streamline, and Art Deco Doorknobs look best on this set. See more items from our Interior Door Sets category. Specifications Item # 7801 Finish Shown Lacquered Polished Brass Height 2" Width 2" Doorknob 5418 Fluted Crystal Knob Price As Shown Base Total $90.00 Grand Total $90.00