A skateboard includes a deck with two trucks connected to an underside of the deck and each truck has a case with two axles so that two rollers are rotatably connected to the two axles. Two protection members are connected to the two cases respectively and at least one cushion member is connected between respective one of the protection members and respective one of the cases. A rolling shaft is connected each of the two protection members and includes a mediate section which extends out from an opening of the protection member corresponding thereto so as to provide smooth grinding.
