This is mine. Not sure if it's LR or aftermarket or part number as it was very hard to find one when I restored the car and wanted rid of the unattractive swan neck some years ago.
You can see it has two robust pieces each side of flat steel going to the plate you bolt the towball to rather than the tube design someone posted earlier which never seems nearly as strong.
I bolted a dixon bate coupling on then so I can alter the height and also put a custom motorbike rack on which has the DB coupling welded on. Bike weighs 250kg which is way more than any of the commercial ones offer but mine has two outriggers that locate in sockets I've welded to the underside of the tow bar assembly at each far side for extra stability. With the air susp there's no ride or handing issues with the probably 300kg, with the rack, hanging off the back.
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