CURT Commercial Duty Class 5 Trailer Hitch, 2-1/2-Inch Receiver, Compatible with Select Dodge Ram 1500, 2500, 3500 Model 15704CURT Commercial Duty Class 5 Trailer Hitch, 2 1 2 Inch Receiver, Compatible with Select Dodge Ram 1500, 2500, 3500 Model 15704 In the world of commercial towing, more is expected. A job cannot be completed if the equipment cannot handle the workload. That is why CURT developed the Commercial Duty class 5 trailer hitch. Constructed from steel and engineered for power, these class 5 hitches are designed to complement the towing power of full size,