This Metal Axle and Hex Set provides an ideal replacement part for your ARRMA vehicle. Pre-Assembled front driveshafts for easy fit. Anodized aluminum clamping wheel hexes for great looks and extreme durability. 12mm hex size allows fit of a wide range of wheel/tire sets. 2 x Front universal joint driveshafts 2 x Rear stub axles 4 x Locking wheel hexes 4 x Locking grub screws 4 x Drive pins 4 x M4 Wheel nuts