? High Quality 100% New durable and good performance fully assembled you can install directly and easily.? Compatibility 3D Printer full assembled MK8 extruder set For Ender-3/ Ender-3s/ Ender-3 Pro and more 3D printer.? High Temperature Resistance Stainless steel material nozzle throat and high quality resistance whose temperature can up to 260 °C/ 500 °F? Package List Mainly including 2 fans fan covers heat block cooling block nozzle throat pipe connector teflon pipe thermistor sensor heating tube screws gaskets etc.? Surprise GiftComes with 4 nozzles and a black silicone sleeve for free in the package.