Barton Marine Cleat - 5/16in Black. Made of nylon reinforced composite and secures braided lines up to 5/16" (10 mm) with a working load limit of 154 lb (70 kg.) The Barton Marine Quick Cleat offers exceptional value.From securing fenders gear painter lines buckets boat gears or other gear the Quick Cleat is designed to alter rope tension in one direction but grips the rope firmly and securely in the other.Quick Cleats are easy to use. Simply rotate the lever on top of the cleat insert the line and release the lever which secures the rope. Package Contents: Barton Marine Cleat - 5/16in Barton Marine 60030: Cleat - 5/16in Black