Creality Official 3D Printer Hotend Silicone Sock Heater Block Silicone Cover for Ender 3/3 Pro/3 V2, Ender 5/5 Plus/ 5 Pro, CR 10 Series, MK7/ 8/9 3D Printer Hotend (3 Pcs)

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Upgraded Material – The MK8 silicone sock made of heat-resistant, non-stick silicone material, high-temperature resistance: 280℃.
Function – The silicone cover will keep your heater block clean and repel plastic of burnt, blackened and build-up, so that can extend the life of the heater block and extruder; and helps to keep the hotend temperature stable.
Durable to use – The silicone case has good flexibility and can be placed close to the heating block, it is easy to install, stable and not easy to fall off, very strong.
Packing – 3pcs silicone cover for MK7, MK8, MK9 Makerbot heater block.