Imdinnogo BCZAMD 2Pcs 24V 50W Upgraded Ceramic Heater Cartridge Wire 2M/ 78.7 in 3D Printer Extruder Hotend Part Heating Tube 620mm Heat Control for Reprap A8 Make SelectV2 CR10 Ender Pro Heater Block

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Heating head material: 304 stainless steel;
Working Temperature: < 350 degrees. bigger power and have longer, much stronger cables, heats up faster and better PID temps.
Compared to stock red heating tube(40W), Pros 1.From the original ordinary 0.3-line high-temperature line to 0.5-line thick white high-temperature line, can bear higher temperature.