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Cartridge Heater 12V 40W 48V 100W Single End Ceramic Heater Cartridge for 3D Printer Hotend Mini Mold. High Efficiency Heating: Thermal efficiency over 90% with magnesium oxide insulation layer. Customizable Dimensions: Length 50-1000mm and diameter 3-30mm to fit specific holes. Wide Voltage Options: Available in 380V, 240V, 220V, 110V, 36V, 24V, or 12V. Compact Structure: Single-end wire-out design saves space for deep hole heating. CE & RoHS Certified: Meets international safety and environmental standards. Fast Delivery: Samples ready in 3-7 days; batch goods in 5-25 days.