1. Arm Idler is Made of metal material.
The plastic arm life time is about 3-6 month, our idler arm is made of alluminum and with bearing, much better than the plastic one.

2. Upgrade Small Bearing.
The bearing with teeth, it can hold the filament tightly and easy to extrude filament, NEVER Skid.

3.Suitable for 1.75mm Filament

Black 66 Teeth Big Gear

1. with 66 teeth, which are treated without any burrs, which can engage the filament smoothly and quitely.

2.This extruder gear is made of plastic(POM) and stainless material, which is widely used in the industrial field, strong enough for feeding filament.

Upgrated U-groove bearing

The U-shaped bearing can clamp the filament tightly and easily extrude the filament without slipping.

Package list:

Option 1: Silver arm idler only
Option 2: Black arm idler only
Option 3: Silver arm idler + Black big gear
Option 4: Black arm idler + Black big gear

Compatible with

Those ilder arm can be used in Titan Aero extruder, but also suitable for following models:
MK2
Prusa i3
Ultimate
Artillery Genius
Artillery Sidewinder X1

Picked For You !!