BZ 3D Ender 3 Dual Gear Extruder,Dual Drive Metal Extruder for V2/Pro/Ender 5/Plus/CR 6 SE/Ender Neo/Max Neo/CR10/10S/CR10S Pro Printer Extruder.(Motor Shaft>20mm)

Dual gear Single pneumatic extruder,high extrusion force, enhancing the feed strength , ensuring smooth feeding, better pressure pushes the filament into the printer, not easy to lose steps. This all metal dual gear extruder is compatible with Ender 3 V2,Ender 3 Pro,Ender 3,Ender 3 Neo,Ender 3 V2 Neo,Ender 3 Max Neo,Ender 5, Ender 5 Pro,CR-6 SE,CR10 S series,Tornado 3D printer etc.ONLY suit for 3d printers with motor shaft over 20mm,please measure the shaft length before placing the order. The Extruder Upgraded 1: This idler gear is upgraded with washers on both sides to prevent the extruder base from wearing out as quickly (prevents it from no longer lining up with the gears on the stepper motor). Upgrade 2: This idler gear uses black half-threaded screws (to prevent premature wear of the bearings inside the gear) to increase the life of the extruder. Please calibrate the E-steps from 100 to 139.Need to be assembled by itself. Note:For Mega/Vyper users,Please make sure to： Invert the stepper motor in firmware or by swapping stepper cables to changing the direction of rotation.