This Attwood Seat Swivel is a sturdy, swiveling mounting point for a boat seat. This mount swivels to provide access to and a view of the surroundings. The 6 ¼-inch mount does not tilt. It is made of aluminum and has black powder coating to help it resist corrosion and perform reliably in the marine environment. Attwood Corporation has been an award-winning leader in engineering, testing, and manufacturing of the highest quality marine products for over 100 years.