The width of the tongue is 65mm Reversible (ball can be fit on top or underneath) The distance from the end of the hitch that goes in your car's receiver to the beginning of the pin hole : 58mm Hitch tube is square & is 40mm from inside and 50mm from outside Powder coated finish & steel ball Ball mounts connect your tow vehicle's hitch with the coupler on your trailer. The ball mount slides into the hitch's opening to connect to the tow vehicle and is held in place with a pin and clip. The ball mount has a platform with a hole in it where a hitch ball is attached. How to choose the correct ball mount Determine how much weight capacity your ball mount should have Make sure your ball mount fits your receiver and your trailer coupler Determine the rise or drop needed to tow your trailer level Decide whether you want these other features in your ball mount: Adjustable ball mounts fit trailers of different coupler heights and sizes Aluminum vs steel construction Locks and locking ball mounts Other special features Specifications: With a 50mm diameter ball With a 15mm pin Reversible (ball can be fit on top or underneath) Hitch : 300mm long The width of the tongue is 65mm The pinhole to tow ball hole is 305mm The distance from the end of the hitch that goes in your car's receiver to the beginning of the pinhole: 58mm Hitch tube is square & is 40mm from inside and 50mm from outside Powder-coated finish & steel ball. Complies with Australian Standard AS 4177.1:2004 In the Box 1 X TOWBAR 1 X 50MM TOWBALL 1 X PIN LOCK 1 X BALL COVER