Description 1 Single ended heating effective heating part must be dry 2 The electric joint of the single ended family tube should be placed outside the insulation and heating chamber the working voltage should not exceed 10 of its rated value and the shell should be effectively grounded 3 Electric heating element working environment the temperature is not greater than 95 degrees no explosive corrosive gases 4 Electric heating elements should be stored in a dry place not dampPackage include 1x 1M 24V 40W 3D Printer Heating Rod