Check the listing for details. 3D Printer Heat Block Kit 300℃ High Temperature For Ender-3 S1 Series Models. Condition: New, Made in China. Listed at 13.42 USD. 1.Material：Bimetal Heatbreak Throat Tube - Using titanium alloy and copper two kinds of metal processing, titanium alloy has good thermal insulation,copper to help heat dissipation. 2.Heating Block-aluminum alloy 3.High temperature pro model has a maximum operating temperature of 300° 4. 0.02 inch (0.4 mm) Nozzle: The tip of the nozzle is 0.02 inch (0.4 mm) so it does not leak or clog and produces low friction printing.Great for high-precision hot end kit 5.Compatible with: 3D printer heat block kit.Compatible with Ender-3 S1 series models (Fits Ender 3 S1/Ender 3 S1 PRO/CR 10 Smart Pro) ) 6.Easy to use: The parts can be easily replaced, connected and installed, so you can assemble and modify them smoothly.Can be applied to all types of materials.