Boltmaster 6-32 in. Dia. x 12 in. L Steel Threaded Rod. Typically used by the plumbing and contracting trades. Used in maintenance departments in various applications. Threaded steel rod coarse style steel rod Should not be welded. The crisply tailored look of the Fifth Avenue Plate has a universal appeal that works well with almost any home. Add the Bordeaux 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 knobs are created from 24% lead crystal for unparalleled clarity and beauty, and mounted on a solid (not plated) forged brass base.