A net structure for attachment to a roll cage of a vehicle includes a mesh structure, a reinforcement structure attached to the mesh structure, and an overload indicator. The cushioning members are interposed in spaces between the tank housing portion and all faces of the fuel tank, namely, the front and rear end faces, the right and left side faces, and the top and bottom faces of the fuel tank. The visible laser cooperates with a positioning feature on the nozzle body for visually positioning the coolant nozzle relative to the grinding wheel. The memory may also securely store sensitive data.