Lock for Horsebox - name?

[Shannon_Clover]

I have seen an ad for a lock to secure a horsebox.
Its yellow and it prevents the trailer being hitched to a vehicle.
Any idea what the name and where to buy it?
I compeltely forgot name and where exactly i found it.

 

[BIrish]

It's called a hitchlock. Ebay, caravan & camping stores, trailer stockists, Agri merchants.

Don't skimp - buy a Bulldog one if you can. Others can be easily popped off with a crowbar.

 

[Shannon_Clover]

Thank you very much for your help

Update, googled but there a few choices.
Is the best bulldog lockhitch a heavy duty one?