This is the B'struder idler arm modified to use the idler bearing that comes with the Anet A8.
More specifically, this is for a u-groove bearing with the following dimensions:
Thickness: 4 mm
Outer Diameter: 13 mm
Grooved Diameter: 11 mm
Inner Diameter: 4 mm
The idler bearing is held in place with a M4 screw instead of a M3 in the original.
I threw in a no nut version as well as I didn't think it needed one.
Also threw in some 623zz bearing to bushing adapters because I don't think the hinge needs bearings either.
Working with no issues for me.
To avoid confusion, this is not compatible with my geared b'struder remix here: https://www.thingiverse.com/thing:3129983