Lee's 30 Degree Stainless Steel Swivel Base Flush Mount Rod Holder - Medium - 2" OD X 6.5" Tube f/Small Bent Butts [RH5165]RH5165 Standard Angle 30 Short Tube Medium size Short Swivel Base for Stand Up Rods with Curved Butts. Has 2" OD x 6 1 2" long tube. Without a doubt, our swivel base rod holder is the Ultimate Rod Holder for the serious sportsman. Primarily designed to be used with bent butt tackle, the rod holders unique swivel base allows the rod butt to rotate in the rod holder when side pressure is applied to the tip of the rod. This is an indispensable tool,