TEVO Titan Extruder Full Kit with NEMA 17 Stepper Motor for 3D Printer,Full Kit with NEMA 17 Stepper Motor for 3D Printer TEVO Titan Extruder, can start printing within 15 minutes, Interchangeable connector, can replace with your preferred model,TEVO Titan Extruder Full Kit with NEMA 17 Stepper Motor for 3D Printer ssupport both Direct Drive and Bowden Mounting Bracket, Easy to assemble.for 3D Printer TEVO Titan Extruder Full Kit with NEMA 17 Stepper Motor.