High Temperature Resistance:This 3D Printer Throat Tube is Made of All-Metal Material, Precision-Machined, High Temperature Resistance Up to 420 1.75mm Filament:The Inner Hole Finish is 0.3 and the Torque is More Than 10kg, Could Print 1.75mm Filament Fast and Safely Bimetal Material Advantage:The All Metal Heatbreak is Made of Titanium Alloy and Copper.Titanium Alloy is Used to Reduce Heat Conduction and Gold-Plated Copper is Used to Accelerate Heat Conduction Easy to Install: This Heatbreak Throat Cut is Smooth and Flat Without Any Burrs,Could Be Seamlessly Connected With Nozzle, No Risk of Filament Leakage,Very Convenient to Install Application:Total Length of Heatbreak is 27.5mm with M6 Screw Thread,Suitable for Creality 3D Printer Upgrade CR10 S4 S5 Ender 3 V2 Ender3 PRO Ender 5 CS3 Hotends