Master Lock 1491DAT Trailer Coupler Pivot Lock Latch Pin The product is easy to use and highly durable The product has easy handing Trailer coupler latch pin with pivoting latch lock, 4 inch chain is attached to end of pin to prevent loss when not in use Secures couplet latch from opening during use Stainless Steel blade Includes 6" cable and attachment ring Easy to use Corrosion resistant