Incorrect latching and/or forgetting to properly close the latch mechanism which causes trailer separation is now a thing of the past. The Drop-N-Go Auto Latch Coupler from Tie Down allows the coupler, when set in the tow (latch) position, to automatically latch when set on top of the hitch ball with minimal weight. Cast steel ball clamp and latch handle are incredibly strong. Class 4 coupler. 7,000-lb. capacity.