C.E. Smith 80 Series Standard Flush Mount Rod Holder - 30 Degree - Stainless Steel - Cast Bottom - Black Liner [536820C]80 Series Standard Flush Mount Rod Holder 30 Degree Stainless Steel Cast Bottom Black Liner These flush mount rod holders are made of 316L stainless steel and have a wide, low profile cap that improves the look of any boat and provides outstanding mounting strength. This model has a durable, rounded cast bottom with a hole to drain water. Features: 316L stainless steel Fits 2 1 2 in. hole diameter Cast models feature a in. drain hole No logo on the