Features: brand new and high quality Stainless Steel Throat: 3D printer parts aluminum heater block extruder hotend kit is replacement parts for Ender 3 /Ender 3 Pro / Ender 5 /Ender 5 Pro /CR10 /CR10S /S4 /S5(There is no threaded hole between the heating block and the heat sink to fix it). Aluminum Heater Block: Works perfect with nozzle and nozzle throat. 0.4mm Brass Nozzles: The extruder nozzles can prevent print head from leakage effectively and produce consistent prints with smooth and glossy polish. Reduce the resistance from the corners and avoid blocking of the filament with rounded chamfer. Excellent Cleaning Needles: The nozzle cleaning needles are very flexible and robust, easy to bend the needle into nozzle and will not break. Perfect to handle tough extruder hot end nozzle clogs. PTFE Bowden Tube: PTFE Tubing can resist higher temperature than any other tubing, which is perfect for printing exotic filaments such as ABS, Nylon, and Polycarbonate. This Capricorn XS tubing can keep working at high temperatures up to 260℃. Specifications: Colour: as shown Material: plastic+metal Package Includes: 1 x 3D Printer Parts Accessories Tool Set note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.