Gimbal MountsMount your downrigger in 30 degree flush mount rod holders with these sturdy, corrosion-resistant mounts. 9"tube lengths with 1-1/2" O.D. Tube.Simply slide the mount&';s gimbal tube into your boat&';s recessed holder. Once in place, you have a base ready to accept your downrigger. No holes to drill or changes to make on your boat. Removes easily by pulling up and out of rod holder.9" Gimbal MountWARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.