BW TS20067BMP - Multipro Tow & Stow, 7" Drop, 7.5" Rise | Tri-Ball (1 7/8" x 2" x 2 5/16")Stow the ball and mounting platform on this tri ball ball mount beneath your hitch for a sleek look when you are done towing. Designed for use with your GM MultiPro tailgate. Tow up to 18,000 lbs. Features: Ball mount with built in hitch balls lets you hook up your trailer to your tow vehicle Shank slides into hitch receiver Ball provides connection point for trailer coupler Angled design offers clearance for the inner gate and step feature of your GM