Giving you an outstanding economical performance in a seat mount, Lock&';N-Pin is designed by experiences and actual boaters who you use them regularly. The patented system leads the industry in safety, and prevents unintentional detachment for seat mounts, posts and bases, leaving you safely seated, and not nose down in your windshield or on your boat floor. Which I think we can ALL say is a safe way to go. Zinc Plated Steel 3Adeg Tilt 2-3/4" Steel Pin with Spring Outstanding economical performance Design is proven by decades of experience Patented Lock&';N-Pin system leads the industry in safety Prevents unintentional detachment for seat mounts, posts and bases Exceeds ABYC Standard H31.6.1