This extruder upgrades kits provides a short,well constrained filament path,which will contribute to avoid filament bending,buckling or jamming. 3:1 Ratio of extruding with high strength good precision.Strong compatibility (can be used with all 1.75mm filaments on the market, and above all optimized the performance of remote printing with the flexible filament such as the TPU). For gear reduction, the engine is light and light, but with excellent torque and resolution. Feeding speed is more stable to improve print quality and effectively reduce overall weight. Compatible with i3 Mega,Mega S X Series,Ender 3 CR10 Series 3D Printer. Note: If you use Titan Extruder on the Ender 3 CR10 series printer, Please make sure to:1) Invert the stepper motor in firmware or by swapping stepper cables to changing the direction of rotation. 2) Change the E-steps value, around 385 is recommended. Direct Drive Supported: This upgrading kits also support direct extrusion.It used for V5 and V6 hotend.After-sales guarantee: each defective item can be replacement for free or refund.If any question, please feel free to contact or QA us, BZ 3D is committed to providing you with the best service! 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.