The Solid Brass Cap Rail Extrusion is the cap rail itself — the base material you build a heritage brass railing run from, cut to length for a stair, a balcony, or a wraparound porch. It is solid, hand-polished brass in a flat profile, not brass-plated, so the warm tone runs all the way through and holds up to refinishing over a restoration. Order it in 16-foot or 20-foot lengths. Every other part in the brass cap-rail line works off this extrusion: picket connectors mount the pickets, corner bends carry the rail around direction changes, and scroll and square ends finish the terminations. Solid brass makes it the natural choice for a period restoration, from a single stair to a full porch run.