Replacement FiftyShot™ heating barrel. Our revolutionary annular heating barrel attaches to the FiftyShot™ control unit and monitors and maintains the precise temperature of the oil. Only The Original FiftyShot™ uses True Temp sensors, noise-canceling wires, and built-in thermal fuses ensuring operator safety and precise oil temperature. The heating barrel is constructed of hardened aluminum and provides a 3mm annular air space surrounding the oil. The air is evenly heated and prevents the oil from overheating that can be caused by direct contact with a heating element.