Trailock is available for 30-40mm ring hitches usually fitted to compressors/fuel bowsers/plant trailers, there’s also a lockable towing pin for that size too that fits in a Dixon Bate jaw type hitch. There’s a 50mm one for tractor size trailers, one for lorry drag/drawbar trailers and also one for the army sankey/penman trailers, basically if it’s a ring hitch, They have a lock to fit it!
There’s an articulated trailer one coming soon too.
The Trailock products can be purchased direct from Trailock on their website http://www.trailock.co.uk
Text and images supplied by Trailock, I have not been paid or asked to write this post but thought it would be useful for helping with machine security. For more information please see the disclaimer