Looking for a rustic finishing touch? Top Knobs has expanded its Britannia collection to include several new styles in two finishes: cast iron and natural rust. Details on the handle and knob add an artisan touch and the square-within-square shapes are reminiscent of centuries-old blacksmith’s work, which forged designs into ingots of iron. A sealed finish protects the patina of the cast iron, helping the antiqued look stay in place through years of use and handling.