Features 1、Mk8 silicone sleeve can be used to quickly heat the heating block to the required temperature to prevent rapid heat dissipation 2、Can extend the service life of the heating block, help keep the temperature of the hot end stable, and improve the use effect 3、Mk8 silicone sleeve can keep the heating block clean, prevent the plastic from scorching, blackening and accumulation 4、Silicone sleeve is made of heat-resistant, non-stick silicone material, resistant to high temperatures of 280 degrees Celsius 5、Good flexibility, can be placed close to the heating block, easy to install, stable and not easy to fall off, very strong Specification Item Type: MK8 Silicone Sleeve Material: Silicone Package List 5 x Black Silicone Sleeve 5 x Yellow Silicone Sleeve 5 x Blue Silicone Sleeve