A seat belt tension sensor assembly is adapted to be secured to the seat belt assembly of a vehicle. After the piercer has pierced the item to be sewn with a tip thereof, the needles pierce through vertical slits in the piercer. Then the seal is moved to a closed position, thereby moving blood from the metering chamber to the reservoir and also sealing the reservoir. The pulsed laser energy softens the metal segment, and the electrostatic field causes the metal segments to move into contact with each other. The spray head mechanism includes an aeration unit and a spray unit that are individually selected based on a rotational position of the spray head mechanism in relation to the spout adaptor.