Description: Name: Upgraded Version Hot End Extruder Hotend Kit Applicable for MK8 CR-10 Series 3D Printer Upgraded extrusion head for Creality 3D Printer, heating is super fast, more practical Fine workmanship and stable structure White line: temperature thermistor; Red line: heating tube. Specification: Nozzle diameter: 0.4mm/1.75mm Voltage: 12V Power: 40W Package Includes: 1Piece Extruders Hotend Kit Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, Thank you