Tubular Heater Similar To Oem Hot Runner Manifold Heater Tu13550 (55-1446n1). These Tubular Heater Elements Are Made For 230 Volt Power To Provide 672 Watts Of Heating Capacity To Your Hot Runner Manifold. The Heater Elements Have Metric Termination Threads--m2.5 By 4.5. This Tubular Heater Element Is Available For Same Day Shipments.