Boat Hand Rail Fitting - 30-60 - 90 Degree 7/8" Rectangular Base-Marine 316 Stainless Steel P Precision cast 316 marine grade solid stainless steel. Maximum corrosion resistance and durability in the saltwater environment. Polished to a beautiful mirror-like finish. Angle 60 Degree. Base dimensions: 3 1/16" X 1 3/4". See additional details in product description below.