The trailer air holes, 7 way hookup hole, and 4/6 way hookup hole make this product practical and versatile for a variety of trailer needs. Available in polished 304 stainless steel or smooth aluminum, it fits most makes and models. The radius bottom and recessed design add to its functionality. Sold individually, this product is a practical and durable solution for trailer owners looking for a reliable and versatile hookup hole option.