SILICONE SOCKS USED FOR Mk7/8/9 AND CLONED HOTENDS. It can keep the hot end heating up fast and maintain the target temperature because it prevents the heat loss of the hot end. It is simple use and very effective. Marvle3D is also using for their own working printers. Specs include:

l  Packing: 1 pcs silicone cover for MK7, MK8, MK9 Makerbot heater block.

l  Compatibility: fit for Creality CR-10/CR-10S S4 S5/CR-10 mini/Ender-2/Ender-3/Anet A8/E12/E16 etc. MK7, MK8, MK9 hotend.

l  Material: the MK8 silicone sock made of heat-resistant, non-stick silicone material, high-temperature resistance: 280℃.

l  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.

l  Size and Weight: 2 grams, 23 * 23 * 13mm in volume.