I had a friend who had a 3 Merc 300 HP Donzi with Speedmaster sub units that were stolen ($8000 each). McGard is the only defense against it. I put them on my boat.
This was my second purchase of a stern drive lock. This is a great item and it fits perfectly, the first set worked great in salt water. .Hopefully two sets on my rear wheel drive won't steal.
There are marina thieves who will 'hack' or remove OMC outboard drives while boats are in winter storage. These locks and more security are meant to put an end to that. As advertised, shipped quickly. I recommend this seller. Thanks very much!
I wish I had known about this before my Bravo III was stolen from my new boat last year. They were installed on a new replacement hard drive! I bought 2 packs and put both on my new outdrive. I'm sure it will stop the thief now.