Notice: This Extruder Gear Kit is only compatible with for 5M/5M Pro 3D FDM printer. Material: It's made of High-quality materials with CNC processing. This ensures gear strength, wear resistance, and resistance, improves bearing capacity, and extends service life. Integrated shaft design: It ensures better concentricity and less eccentric rotation, resulting in a more even gear delivery of filaments. High-temperature resistance: all-metal 500 high-temperature printing, well-made, easy to install. Colour:Photo Color Material:plastic Package Contents: 1 set x printing 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.