Mercedes Gla Class Tow Bars And Hitches Available Here. To find tow bars and hitches that really work and that also are safe, first you have to match them to your particular vehicle. Our large selection covers all the popular car makes and models. Tow bars and hitches attach to your vehicle’s chassis, and they are invaluable for towing caravans, boats and agricultural equipment. They even come in handy for helping mates who are stuck in tough situations - in their vehicles, that is. Tow bars and hitches can pull various weights, depending upon their designs. Let us match your vehicle to the right model today. We are sure to stock exactly what you and your vehicle need to start towing.