1、☞ This Sprite Extruder Heater Block Kit is compatible with Creality Ender-3 S1 /CR-10 Smart Pro 3D Printer. 2、☞ The Heater block is made of copper that has been plated with nickel. Our copper alloy has been specially treated to reduce oxidation at high temperatures and has over 3 times the thermal conductivity of brass. This results in faster heat-up times and better temperature control, allowing for printing at temperatures up to 550°C, which is ideal for high-temperature printing. 3、☞ Capable of sustained operation at 300℃, compatible with high temperature filaments like ABS and nylon, enabling greater creative possibilities! Rapid heating facilitates faster printing speeds! 4、☞ What You Get: 1 x 24V40W red heating rod, 1 x High temperature Thermistors, 1 x Plated Copper Heating Block, 1 x Titanium Alloy Red Copper Bimetallic Throat, 1 x Copper-plated Nozzle, 1 x Black Silicone Case and 3Pcs screws. 5、☞ Smooth feeding without leakage. 45° chamfering design at the rear end thread, smooth feeding, flat and smooth nozzle section, highly matched butt joint.