Sea Dog Rail Mount Bracket Injection Molded NylonStainless. Sold as pair. All Sea-Dog Rail Mount Brackets are designed for easy attachment to 78 - 1 tubing. The injection molded nylon mounting parts and rubber liners allow for positive attachment without scratching or marring the tubing. Dimensions 327101-1 round A 34 B 2 327102-1 square A 1-34 B 1-34 California Residents WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov Other Details Google Product Type Hardware Wiser Yes Fast Ship In S