attwood Gunwale Strap Webbing: strong 2"-wide webbing. Resists rot, oils, gasoline and most chemicals Buckle: Quick-release (over-center) buckle. Easy to use, yet secure and safe. Quick tightening  remove slack by pulling on the loose strap end. Cinch tight and secure by depressing buckle handle. Release by lifting the buckle handle Hooks: J-hook with snap closure for secure, easy attachment. Electrostatic discharge coating (EDC) finish to prevent corrosion. Heavy gauge.