Review on Gorilla Automotive 63631 Standard Mag Gorilla Guard Locks (12mm x 1.50 Thread Size) - Comprehensive 4-Pack by Shawn Pollock

My problem with this product (supplied without instructions) is that it comes with loose shims and unless you are very very careful you will install the shims flush with the tire axle and wheelbase which is hard to see is because it is too deep, the washer will be crushed by the flare nut and become stuck in the hole. It would be much better if the washers were made to stay flush (and rotate) with the top of the inner end of the nut. Also, I don't like that the ends of the bolts are flat compared to the chamfered ends of the standard nuts, which fit properly without a washer. So the two problems are related.