Downrigger Pedestal Riser 6" Made from fiber reinforced nylon and stainless steel 2" stainless steel tubing for the ultimate in strength. Designed to be used for all of our downrigger mounts.Plate Dimensions : 5-1/2" x 5-1/2"Bolting Dimensions : 4-1/2" x 3-1/2"WARNING: This product can expose you to chemicals including NICKEL (METALLIC) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov. - cis2:mm5mnJlm -