Hatteras cast stainless steel stanchion rail base. 2 1/4” tall and 1 1/4” by 1 1/4” body. 2 5/8” by 1 1/4” mounting surface requiring two fasteners. For 1” diameter rail. This style is for rail running perpendicular to mounting and is common to hand rail and ladder mounting. New old dealers stock. Very minor blemish from storage.