Features a unique rubber bushing that reduces most of the rattling and prevents accidental unhooking due to vibration. All machined AISI 304 stainless steel construction provides superior corrosion resistance and durability. Easy to install, simply surface mount with six #8 FH fasteners (not included). A 3-1/4" B 1" C 11/16" D 1-1/16" Fastener #8 FH