Prime Steel 18199 Black Dual Length Ball-Mount (2" Drop 3/4" Rise 7-1/2" and 10-1/2") Features a Size of Both 7-1/2 and 10-1/2-Inches Offers a 2-Inch Drop and a 3/4-Inch Rise Features a Multiple-Ball Design for Quick Changes between Ball Sizes Offers Security with a Permanent Weld to the Shank Great Option for Tow Bars and High-Low Adapters