Gooseneck coupler,the capacity is 2000lbs.It is adjustable.Detailed information is as followings: Gooseneck coupler,the capacity is 2000lbs.It is adjustable.Detailed information is as followings: CapacityPart NoOverall Retracted HeightAdjustmentBall SizeDescription2,000lbs11105129.208.02-5/16Adjustable gooseneck coupler