This product includes 1 S1 Genie Heating Block Kit - High Temperature Upgraded Version (300��C) and 2 thermistors (use a silicone sock if printing temperature exceeds 300��C). [Extra Thermistors] Comes with two upgraded thermistors capable of enduring high temperatures up to 300��C for improved printing stability and reliability. [Bimetal Heatbreak Throat Tube] Made from a mix of titanium alloy and copper, designed to minimize upward heat transfer while enhancing heat dissipation, ensuring stable, high-quality 3D printing. [Nickel Copper Plated Nozzle] Features optimized inner and outer surfaces for better material extrusion compatibility with various filaments including PLA, TPU, and ABS, with a maximum working temperature of 500��C. Color: silver, red, black Material: copper, aluminum alloy Package Includes: 1 S1 Genie Heating Block Kit 2 thermistors Only the above items are included other products are not. Note: Colors may vary slightly due to lighting and display differences. Measurement error allows for 1-3cm.