10pcs silicone heat block cover & 2pcs 3D Printer Filament Holder 1. Better temperature resistance and longer service life, supporting various materials such as PLA, ABS, TPU, HIPS, PETG, 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. Applicable to domestic Ender-3s / CR-10 / S and other 3D printers Universal 3D Printer Filament Spool Holder, Suitable for Reprap 3D Printer PLA / ABS Filament Spool Holder Good load-bearing performance, durable and smooth sliding, easy to use Specification: Product name: 3D printer nozzle silicone sleeve Product name: 3D printing supplies rack Colour: Black Material: ABS & Soft glue Package Contents: 10 x silicone heat block cover 2 x 3D Printer Filament Holder 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.