1/2 in. O.D. X 12 in. Annealed brass lavatory Supply riser, adds the finishing touch to any installation. Its trimmable end allows cutting to length for easier installation. The top bullnose portion attaches to sink faucets, using a brusnwick nut (not included - comes with most faucets). made from lead free brass and fully finished for exposed installation, its sleek appearance gives shame to common flexible Supply lines.