A retractable stainless steel cleat with a thin profile that installs easily. Spring loaded stay up design. Each stanchion is a 7/8" stainless steel rod. Drainage receptacles (included) capture moisture and send it to the bilge via pitot tubing (not included). Installation is simple even on narrow gunwales - just drill twice with an appropriate size hole saw. Backed by a lifetime warranty against corrosion. Size 4-1/2" L x 1-5/16" W Height 1-5/8" (Lowered) Depth 3-1/8"