Features: brand new and high quality A direct replacement parts for ender-3 S1 printer hot end heater block. Thermistor Sensor: built-in NTC100K thermistor, the for head is all metal barrel on the thermistor. 2PIN male for head with terminal; cable length: about 52mm/ 2.04 Inch. The temperature measurement: -50 °C ~ +300 °C, great replacement thermistor. If you want to install for your other printer, maker sure the right connector and the right heater block hole, right cable length. Specifications: Material: Metal+ABS Length: Approx 52mm/2.04in for: Ender 3 S1 3D Printer Quantity: 1PC Package Includes: 1x Thermsitor note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-1cm error due to the manual measurme