BIGTREETECH CR10 Heater Block mk8 Silicone Sock for Micro Swiss Cr10 Hotend Creality Ender 3 Mk7-Mk8-Mk9 J-Head Heated Extruder

1. It can effectively keep the heating and the surrounding of the nozzle clean. 2. It is made of heat-resistant silicone, does not stick to other printing materials, and is easy to clean. 3. It has the function of preventing burns. 4. Insulation sleeve has good thermal insulation characteristics, can effectively maintain the temperature of the heating block stable, especially if the print head is equipped with a model cooling fan to cool the print, the temperature of the heating block will not be affected by the surrounding flowing wind to improve the printing quality. 5. ?Please Note? If your print head temperature is above 250 degrees for a long time, please remove your silicone sleeve. Long-term temperature above 250 degrees will damage the silicone sleeve!!