The hardened steel extruder unit is equipped with double gears made of hardened steel, which provides increased extrusion force, prevents slippage, and enhances abrasion resistance. These gears enable the extruder unit to handle tough engineering filaments In addition, the extruder unit includes a sensor that supports filament break detection, which can help prevent print failures and improve overall printing efficiency. Please confirm your printer model before making a purchase, as the connector may differ between the X1 Series version and the P1P version. Colour:black Material:Plastic + Metal The actual product may have slight color difference or difference, which not affect the use Package Contents: 1 * Printer Accessories 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Minnanxin