The class IV adjustable ball mount is a receiver hitch accessory consisting of two trailer hitch balls and a channel mount. The quick-flip hitch balls eliminate the need to remove and install different ball mounts. The 2-inch and the 2-5/16-inch hitch balls have a gross trailer weight (GTW) of 10,000 pounds each. The adjustable ball mount allows you to use in the drop or rise position and also includes a patent pending easy grip U-pin and clip to secure the hitch balls and a hitch pin. The unique, patented X-Mount® shank design allows less surface contact and channels away moisture to minimize rust buildup and seizing within the aperture of the receiver hitch. This X-Mount® ball mount features increased towing capacity for today's towing demands, depending on your requirement. It is ideal for every day towing, but allows for maximum flexibility when towing multiple trailers and heavy cargo. Class IV mounts are great for towing campers, boats, and trailers carrying heavy-duty equipment. (DISCLAIMER: WHILE THESE ARE COMMON USES FOR THIS CLASS, IT IS IMPORTANT THAT YOU KNOW THE TOTAL WEIGHT OF THE TRAILER AND ITS CONTENTS, AND THAT YOU DO NOT EXCEED THE RECOMMENDED MAXIMUM TOWING CAPACITY DETERMINED BY YOUR VEHICLE MANUFACTURER.)