Reese Towpower® 7068820 Class-V Tri Ball Draw Bar, 2" x 2"Reese Towpower Class V Tri Ball provides the greatest convenience and versatility for ease of use to customers who have various towing requirements. Simply adjust the ball mount and rotate to the desired hitch ball. Engineered and tested to exceed towing standards. 2" x 2" box opening Use with hitch ball sizes 1 7 8", 2" & 2 5 16" Perfect for multi trailer owners Simply adjust the ball mount and rotate to the desired hitch ball Engineered and tested