The reds of the heating block. PTFE tube for Capricorn - Approximately 14 inches long. Due to its high lubricity and high temperature resistance, it improves printing quality and accuracy. Pluggable: The heating tube and the temperature thermistor which, from the control box, connect them to the terminal box and the pin. Then you can plug in the hotend kit, easier to replace the hotend kit. With more terminal and pin housing as spare parts, in case of installation failure and waste. MK8 extruder hot end kit, the white one was temperature thermistor, the braided one was heating tube 24V40W. Product Name: CR10 hotend kit Nozzle: 1.75 / 0.4mm Throat hole: 4.1 Thermistor: 100K B 3950 ± 1%, length 1m Heating tube: 24V 40W 1m Throat length: 30mm PTFE tube: ID2 OD4mm 1m Material: Aluminum Installation type: External thread connection Operating temperature range: -40~+260°C (-40~+500°F) Features: 100% brand new and high quality. Notes: (About the gift silicone cover, we have four colors: