THIS DEVICE IS SHOWED IN THE DETAIL DRAWING THAT ENCLOSED ON THE PAPER, IT FIXES INTO THE FUEL TANK OF VEHICLES LIKE ” CARS, MOTOR MOTORBIKE,….” AND SO WE CAN FIX IT INTO THE FUEL TANKS OF SHIPS, THE WATERCRAFT, THE PLANES, ETC. THIS DEVICE DESIGNED TO PREVENT THE FIRING, WHICH OCCURS OF THE FUEL LEAKAGE OUTSIDE THE FUEL TANK. IT CLOSES ALL THE TANK’S HOLES IMMEDIATELY. THE DEPENDS ON EXPOSURE TO INTENSE VIBRATIONS, EARTHQUAKE OR INTENSE CRASHING. ALL DEVICES’ COMPONENT,MADE OF PLASTIC METAL TO PREVENT MAKING ANY KIND OF FRICTION SPARK DURING DOING