1. For X2 & for Genius Pro 3D printer replacement. 2.Easy to exchange: just remove ribbon cable, undo 3 bolts, remove one , replace with another, replace 3 bolts, put ribbon cable back in slot, level again. 3.This is a complete upgraded hot end for the X2 & For Genius Pro, complete with padded motor, thermistor, , circuit board, LED circuit board, complete hotend and heated sock. 4.Direct-drive extruder, excellent support for flexible filament. 5.Optimal Performance: The inclusion of a top-tier hotend allows for consistent heating and improved filament flow, which translates to finer details and smoother finishes on your prints. Due to different batches, there may be differences in product appearance and printed text, which will not affect use Colour:Black&Blue Material:Plastic + Metal Package Contents: 1 x Print Single Nozzle Assembly 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.