Easy to Install: Easy for the CR10 hotend to Assemble, packed whole extruder kit, just fix it on X axis and connect to control box, it will work. Fluent Printing Without String: Independently developed brass nozzle has bullet structure, which improves uniform heating to reduce clogging and string. Fast Heating and Heat Dissipation: Heating block + heatsink + fan, fficient heating and heat dissipation, greatly improved printing success rate. Fan cooling applied, even heat dissipation, more stable printing. Applicable Models: This 12V full hotend kit is compatible with CR 10/CR 10 Mini/CR 10S/CR 10 S4/CR 10 S5 FDM 3d printers. Thermistor and Heating Tube: High quality thermistor and heating tube are up to 260,with rapid-risen temperature, precise temperature control and good stability.