Arrma Metal Axle & Hex Set ARA311198 is a set that provides an ideal upgrade for ARRMA vehicles. It features pre-assembled front driveshafts for easy fit, anodized aluminum clamping wheel hexes for durability and looks, and a 12mm hex size that allows for a wide range of wheel/tire sets. It also includes 2 x front universal joint driveshafts, 2 x rear stub axles, 4 x clamping wheel hexes, 4 x locking grub screws, 4 x drive pins, and 4 x M4 wheel nuts.