The Reese Towpower safety chain with quick-release square tab-lock pin is designed for multiple uses on equipment and shafts up to 2-1/2" in diameter. The safety chain allows for the pin and tab-lock to hang freely while not in use, which is ideal for marine applications, and also includes a clasp for secure closure. Bright zinc finish is weather-resistant and long-lasting. Includes a clasp for secure closure Bright zinc finish for weather resistance | Towpower Safety Chain With Pin Clasp