Perfectly suitable for the silicone sleeve of the original heating aluminium block. Especially if the head is equipped with a model cooling fan to cool the pressure, it can effectively heat up quickly and the temperature is not affected by the surrounding wind, which improves the quality. Features - Material: Silicone. - The block is perfect replacement parts, works compatible with most printers. - The heating block silicone cover is made of heat-resistant and non-adhesive silicone material, it will not melt like plastic. - And this 3D printer silicone cover has high temperature resistance, heat insulation and scalding protection function. - Excellent features, our silicone heating block cover has very good heat retention properties. - It can keep the temperature of the heating block stable (especially the prints head with model fan to cool printing). Package list: 6 x silicone covers