This all 18-8 stainless steel mount attaches to flat surfaces such as bulkheads, hulls, transoms or cabin sides. Also mounts to square or flat rails.
Fits HORIZONTAL RAILS up to 2-1/4" (57 mm) high by any depth
VERTICAL RAILS up to 1-5/8" (41 mm) wide by any depth.
**Some fasteners required for installation.