1. The annular heating magnetic ring improves heating efficiency and makes heating more uniform. 2. The nozzle cavity is large, which can print at a higher flow rate. 3. The titanium alloy throat reduces heat conduction, and the nozzle is made of bimetal to improve thermal conductivity and increase wear resistance. Due to different batches, there may be differences in product appearance and printed text, which not affect use Colour:As Shown Material:Hardened steel + silicone Package Contents: 1 x Hotend Integrated Kit 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.