Curt 2-5/16" A-Frame Coupler With Easy Lock. Fits A-frame trailer tongues and 2-5/16" trailer balls. Has a gross weight capacity of 10,000lbs and a tongue capacity of 1,500lbs. Passes SAE-684 performance testing as a class 4 coupler. Easy-lock latching system for simple operation. Features holes to accept a safety pin or coupler lock. Constructed from die-cut, punched out steel. Protected by a durable gloss black powder coat finish.