TCRC 4PCS Aluminum M2 Wheels Center Caps Lock Nuts

These are a good upgrade from the stock nuts on most crawlers. They should be a direct replacement on 1/24 and 1/18 axles. The finish on these is really good and it helps sell the scale look of the wheels better than some little bare nut there. The one downside to them is you do need the included tool to install and remove them. Should you lose that tool you'll be take these off with pliers and ruining the finish.

Excellent scale sized centers. They look and fit my trucks perfectly. They are also a perfect compliment to a nice set of wheels. One point to note, when tightening center caps like this, make sure the included "socket" is lined up to the centers perfectly straight for best performance. And do not over torque the nut. Basically, if you pay attention when installing and removing centers like these, they will last a long time. It's also worth noting, people proactively add CA glue between the inner nut and cap to insure the caps aren't lost while running your vehicles. Just make sure you don't get glue on the threads of the nuts.