arrma wheel hex metal 12mm (4), arac9473 arrma this 12mm wheel hex set provides you with the parts you need to run 12mm hex wheels on your arrma vehicle.features:constructed from high quality aluminum material - precision manufactured for easy fit to your model - high strength steel pins - retaining set screws included includes:4 x 12mm aluminum wheel hex 4 x 10 x 2.5mm pin 4 x m3 x 3mm set screw