1. Better temperature resistance and service life, supporting materials such as , ABS, TPU, HIPS, , etc. 2. Can effectively protect the heating block and the clean around the nozzle 3. Made of heat-resistant silicone, it will not bond with printing materials of other ingredients, easy to clean up 4. It has the function of heat insulation and scald prevention.The silicone sleeve has good thermal insulation properties and can effectively maintain the stability of the temperature of the heating block.5. Applicable to domestic -3s / -10 / S and other 3D printers Specification: Product name: silicone sleeve Colour:Black Material:Soft glue Package Contents: 10*silicone heat block cover Only the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/- 1-3cm.