This kit can help you improve your print quality by getting rid of filament slippage. Aluminum doesn’t soften at printing temp like the plastic printed parts can, leading to less idler spring tension, filament slipping, bad prints.
Hardware is included in the kit, but you might also need additional screws to mount heatsink with fan, for an example.
Stepper Motor: 42HD4027-01
See supplied datasheet for optional 57 oz-in NEMA 17 stepper motor (The last picture)
1 x Aluminum main extruder body
1 x Aluminum tension lever
1 x Idler bearing for 1.75mm filament
1 x Brass drive gear
1 x High tension spring
1 x Assembly screws
1 x Stepper Motor, 40mm long body, with cable (if motor included option is selected)
This kit can help you improve your print quality by getting rid of filament slippage.