This nozzle kit includes 1x Bimetal heatbreak, 1x plated copper nozzle , 1x plated copper heater block, 1x heater tube, high temperature thermistor sensor and 1x silicone sock (if your printing temperature is over300C, please remove the silicone sock before printing). Compatible with Ender 3 S1 Ender 3 S1 PRO, CR10 Smart Pro, Sermoon V1 , Sermoon V1 pro 3D Printer