Cannon 12" Gimbal Mount 
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.
12" Gimbal Mount
WARNING: 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.
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Cannon Standard Mounting Base