Features: Experience consistent and efficient heating with for X3 Extruder Thermistor Heater Cartridge set. Enhances your 3D printing precisions perfectly fit for your 3D printer's needs. The extruder nozzle thermistor ensures even heat distribution and accurate temperature control for optimals performances For 3D printing enthusiasts, professional upgrades or replacements for their printing equipment. Upgrades ysour 3D printing setups with ease; our user friendly installation process spend less time on maintenance and bringing your creative projects to life. Specifications: Length:about 13cm/5.12in for X3 Extruder Thermistor Heater Cartridge Set Package Includes: 1Set Extruder Thermistor Heater Cartridge Set note: Due to problem of lighting effect there might be tolerances in product, please understand. Please allow 0-1cm error due to the measurement.