Space-saving rod holder nestles inside gunwaleMade of 316L stainless steel, the CE Smith Flush-Mount Rod Holder features a wide, low-profile cap for excellent mounting strength and to enhance the appearance of any boat. 100% welded cap to tube joint will never break. Super tough 1/4"W x 1/2"H gimbal bar will stand up to virtually any punishment heavy tackle or downrigger mounts can dish out. White vinyl liner protects rods and is keyed with the gimbal bar to eliminate liner twist.1 5/8" inside diamerter2" outside diameter9"L tube1/4"W x 1/2"H welded cast gimbal bar316L stainless steel4 1/2"L x 3 5/8"W cap