Description: Can effectively keep the heating block and the nozzle clean around? Made of heat-resistant silicone, it does not adhere to the printing materials of other ingredients, and it is convenient to clean. The thermal insulation sleeve has good thermal insulation properties and can effectively keep the temperature of the heating block stable. Has a certain role in preventing burns. It has better temperature resistance and longer service life. It supports PLA, ABS, TPU, HIPS, WOOD, PETG and other materials. Package Includes: 1x Silicone Case Cover