Constructed from rugged 316 stainless steel, the C.E. Smith Swivel In-Gunnel Rod Holders is ideal when bottom fishing with an electronic reel and trolling for tuna or wahoo with bent-butt rods. The Swivel In-Gunnel Rod Holder features a precision swivel gimbal that allows the rod tip to follow the direction of the line which prevents line wear and allows fish fighting without removing the rod from rod holder. The cast one-piece stainless steel swivel cup with 1/2 shaft is precision machined with fine threads. Tube depth: 10.5. Inside dia: 1.88. Available: 0, 15. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Rod Holders.