Description The Arc Plate, with its graceful top curve meeting a waterfall edge, conveys a gentleness augmented by strength. Add the Bordeaux Crystal Knob, with its traditional circular shape and flat outer surface that magnify the intricate facets underneath, and you will enjoy a combination with an unrivaled style. All Grandeur crystal knobs are created from lead-free crystal for unparalleled clarity and beauty, and mounted on a solid (not plated) forged brass base.