Rail / Side MountLets you secure your downrigger to the rail of your boat. No cutting or drilling necessary. Just clamp this aluminum mount to the rail and position your downrigger on the base. It can also be used to mount a downrigger to the side of your boat when gunwales won't accommodate deck plates or bases. Should be attached at the "T" joint of the rail.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.