The 00-512/1H Floor Flange is the mounting base for a heritage brass railing at 1.5-inch OD. The 4-inch flange spreads a stable footprint on the floor, and the 1.5-inch socket receives a railing post or baluster, so uprights sit square and secure. It suits restoration work of every size — a home porch or brownstone rail, a shop or lobby railing, or a staircase where posts repeat. Finished in Polished Brass to match the period look, it works across Lavi's brass railing families — the cap rail picket bases, the tubular flush fittings, and the matching ball joinery.