Featuring A 42-40 Stepper Motor Hotend Kit, A 1 Point 75Mm Direct Drive Extruder 100% Creality Official - Creality Ender 3 direct drive upgrade kit, compatible with Ender 3/Ender 3 V2/Ender 3 Pro 3D Printer. Supporting all 1.75mm diameter filament especially for flexible filament such as TPU, PLA and other flexible filaments. Easy Assemble - Switch Bowden extrusion to direct extruder at any time and easy to disassembly. It doesn't affect the inherent function of the printer because it's a full extrusion kit. Come with longer connecting cable, tools, accessories and diagram instruction, easy to assemble. Smooth Feed-in - Lower torque requirements on the stepper motor, reducing the possibility of the nozzle blockage when retracting filament and malfunction when loading new filament. Strong Sturdy All Metal Hotend - This direct extruder kit is all metal structure, durable and wear resistant and Integrated structure is convenient for wiring and replacing. Creality 3D Official Store - We are the ONLY Creality 3D Official store. There are more than 20 engineers for after-sales service and provide 24/7 customer service with 1-year limited and lifetime technical assistance. Please contact us via ?ask a question?directly to get the professional assistance.