Creality 3D MK8 Complete Hotend KitMK8 Extruder J-head Hot End Kit Replacement for Creality Ender3 and Ender3 PRO (24V 40W Hotend Assembly / 1.75mm) compatible with different sizes of MK8 nozzlesDescription: MK8 Nozzle diameter: 0.4mm Throat length: 52mm Aluminum block size: approx. 20 x 20 x 10mm Heater Cartridge: 24V 40W Operating temperature range: -40~+260°C (-40~+500°F) Items to Note: MK8 Extruder Hot End Kit The double white wires are the temperature thermistor. The red and white wires are the heater Cartridge (24V 40W). Suitable For Creality ender-3. Filament: 1.75mm Package include: 1 x 1.75mm 0.4mm Brass Mk8 Nozzle 1 x Aluminum Block 1 x Heater Cartridge 1 x Thermistor 1 x M6x30mm Throat Pipe (Built-in Teflon) 1 x Heatsink 1 x PTFE Tubing (approx. 1M long) 1 x M10 Threaded Collet