Notice: This heater and thermistor replacement is only compatible with for Neptune 4, for Neptune 4 Pro, for Neptune 4 Max, for Neptune 4 Plus FDM 3D printer. Heating rod size: 24V 50W, D6x20mm, cable length with terminal about 45mm. Thermistor rod size: D3x10mm, NTC 100K 3950. It adopts white high-temperature cord which can bear 300. The cable length with terminal about 90mm. Please note that there is a slight color difference or discrepancy in kind, it does not affect the use, please do not mind, thank you! Colour:As Shown Material:Metal Package Contents: 2 * heating elements 2 * thermistor temperature sensor for Neptune 4 Printer series Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.