Stair Parts Depot offers the Cable Rail System in two models: Inside-to-Inside and Outside-to-Outside. These systems have specialized parts and fittings to work with level and rake handrail. Made with 316 “Marine Grade” stainless steel, the Cable Rail System is good for exterior usage:
Cable Rail System Kit
Wood, galvanized steel, or stainless steel Newel posts that complement the Cable Rail System:
Wood posts are for interior use only.
Pictures of galvanized and stainless steel posts with receiver fittings: