Review on Mile Marker 430 Premium Locking by Robert Diaz

This is pretty solid for the money. I paid almost 100€. I installed them on my 1986 Nissan D21. 27 matched splines. One thing that is VERY important is reusing the locking ring from your original hubs. Because this is a manual lock compared to standard auto hubs, the retaining ring goes further into the other slot. In general, they performed well off-road. After using it for about a month, I had to re-tighten the 6mm hex bolt.