Rotating, Height Adjustable Tri-Ball, Fits Class III/IV 2" Hitch Box, 10" Long, Tri Ball Never Needs To Leave The Housing To Rotate To A New Ball Size, 7" Rise Or 7" Drop, 1-7/8"Ball 200/2000 LB Capacity, 2" Ball 600/6000 LB Capacity, 2-5/16" Ball 1,000/10,000 LB Capacity.