Used for 1.75mm filament, Reprap, Makerbot, Prusa 3D printer
Full aluminum alloy material, the surface is sandblasted and oxidized
IMPROVED VERSION, equipped with 2 pneumatic fittings, so it feeds more fluently
Nema 17 stepper motor is supported, the stepper motor is not included
Each pack includes ball bearing,spring,screws ,remote connectors and 50 teeth driver gear(bore 5mm?