CE Smith 53680SA, Swivel Flush Mount Rod Holder, Heavy Duty, 0 Degree, 316L Stainless Steel. These super heavy duty swivel rod holders feature the same quality construction and dimensions as the drain bottom 80 series with the addition of a precision machined swivel gimbal controlled by a smooth acting clutch. Precision machined cast stainless gimbal cup stands up to any punishment heavy tackle can dish out. White vinyl liner protects rods and is keyed with the rod holder tube to eliminate liner twist. The clutch may require occasional adjustment so swivel rod holders must be installed where there will be working access to the adjustment nut on the bottom of the rod holder. Why does anyone need swivels? When high speed trolling, Smith's swivel action rod holders prevent costly main line wear by allowing the rod tip to follow the line where it trails behind the boat. The line stays centred on the roller tip preventing line wear, lost fish and lost tackle. They are smart to have in your gunnels when a really big fish takes your bait. And when fighting big fish, it's often smarter to leave the rod in a rod holder. Smith swivels allow the angler to follow the fish while letting the strong swivel rod holder take most of the pressure.