1、POWERFUL TO SQUEEZE: The drive ratio is 3:1, making the extruder more powerful and easier to squeeze the filament, reducing clogging and causing print failures 2、SUPPORT HIGH RESOLUTION OR HIGH FLOW PRINTING: Whether you need high resolution printing with small nozzles or high flow printing with large nozzles, this is an optimized gear ratio combination. With industry leading drive gears, provides unmatched thrust and ultra fast retraction in a lightweight and compact package 3、DIFFERENT DISTANCE PRINTING: This extruder can be used for long and short distance printing, when using short distance printing, support low and high temperature 4、FOR VARIOUS FILAMENTS: Actually almost all plastic filaments like ABS, PLA, TPU, Nylon can be used, versatile and practical, very convenient 5、MINIMIZE GEAR: 3D printer extruder adopt unique dual feed, gears can minimize, slip and increase, feed power, possess high efficiency 1 x 3D Printer Extruder1 Pack of Parts Item Type: 3D Printer Extruder KitMaterial: Hardened steelColour: BlackStep Value or Pulse Number Parameters for Metal Extruder: For LERDGE Motherboard: 16 Subdivisions: 382.165, 32 Subdivisions: 764.331, 64 Subdivisions: 1528.662For Chitu Motherboard: 16 Subdivision: 0.002616, 32 Subdivision: 0.00130, 64 Subdivision: 0.00065Other Open Source Motherboards: 16 Subdivisions: 382.165, 32 Subdivisions: 764.331, 64 Subdivisions: 1528.662For 3D Printers: For Mk8 Anet A8, for CR-10, for Prusa I3 Mk3, for Ender 3