The Lock’N-Pin 3/4 ft. system gives you outstanding economical performance with a design that has been proven by decades of experience. The patented Lock’N-Pin system leads the industry in safety. Lock’N-Pin products exceed ABYC Standard H31.6.1. What is the Attwood difference, Value and ingenuity. For more than 100-years Attwood has been proud to serve the parts and accessory needs of the marine industry. We have partnered with you to design, manufacture, test, and distribute a complete line of products that have been a part of your tradition, and we thank you for this opportunity.