The YITAMOTOR channel-style adjustable trailer hitch ball mount has a standard shank size of 2.5" x 2.5" and two different trailer ball sizes to accommodate two different sizes: 2" and 2-5/16.” The trailer hitch ball can be raised or lowered to 10 inches to create a proper level for any towing situation. Our adjustable trailer hitch ball mount is super easy to operate and helps tow with ease while enabling you to keep your trailer parallel to the ground. All YITAMOTOR adjustable trailer hitches are made with sturdy aluminum construction and dual combo steel balls for long-lasting use in order to give you a more stable, safe towing experience. YITAMOTOR aluminum hitches are available in 4,’’ 6,’’ 8,’’ & 10’’ drops to meet your different needs. This special drop hitch is what you have always been looking for!