First Aid „Axle pins“ One of the the most notable feature and benefit of the BRR-Trucks is the fact every single part is replaceable. With the different first-aid sets you can get the spare parts you are looking for. The First Aid „Axle pins“ set contains two passing axle pins designed to fit the hangar of your BRR-Trucks. Attention! : Regarding assembly of truck-parts make sure to read BRR-Truck-instructions first.