1. Note: Due to prolonged vibration of the machine, hot end components may be damaged in a short period of time. We have designed a tighter clip that requires forceful pressing of the hot end during installation to ensure full alignment with the components before the clamp can be secured, or heat the components first. Designed specifically for A1 series 3D printers, not compatible with X1/X1C/X1E/X1carbon/P1S/P1P/H2D combo. 2. Designed specifically for A1 series 3D printers, not compatible with X1/X1C/X1E/X1carbon/P1S/P1P/H2D combo. 3. The hot end heated kit supports quick swap of the hotend. A quick clamping mechanism is used to secure the heater block and heating base, enabling easy separation of the thermal and electronic components of the hotend, and it can be disassembled and assembled without the help of tools. 4. The hot end heat set can heat the hotend up to 300C and measure the realtime temperature of the hotend with the included thermistor, suitable for multiple 1.75mm filaments print, such as PLA/PETG/ABS/TPU etc. 5. When to Use: The Hotend Heating Assembly may have issues like being wrapped in plastic due to a print failure, the heater or thermistor not working, or the hotend metal latch not working.