Rail Mount #1027Scotty's #1027 Rail Mounts fits up to 1-1/2" round rail, or oval-shaped wooden rails. It is easily installed and removed for storage. The wooden board (not included) transfers the downward pressure to the boat gunnel.Fits all Scotty downriggers and can be used with Scotty's #1026 Pedestal Swivel Mount.Dimensions: 6-1/8" x 7-1/8"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.