This is an excellent system for deck and porch railings; it is easy to install, unobtrusive, extremely strong, and helps prevent moisture damage.
The all-steel hardware consists of a formed base welded to a hollow shaft that is embedded in the post or rail end. Installation is simple and fast: just cut a pilot channel with a hole saw, drive the shaft in (it's bevelled for easy insertion), and screw the base down. Only the base shows, leaving a tidy, finished appearance.
The connection is tremendously strong, since the shaft stiffens the join and is supported by wood inside and out. The base leaves space for air circulation and blocks water from wicking into end grain, preventing rot. Finished in an all-weather epoxy coat suitable for ACQ-treated lumber.
The post anchor is for nominal 4x4 stock and requires a 1-1/4" hole saw. A hardware kit of eight black-finished 1/4" x 3" outdoor lag screws and four 3/8" x 5" galvanized lag screws is available separately (one kit needed per post), or you can supply your own.
The optional post skirt covers exposed screw heads. The paired rail connectors for nominal 2 x 4 stock are available in 90° or 22.5° versions, both with mounting screws (3/4" hole saw needed).
An attractive and durable system.