This is the bearing carrier for the rear wheel of a 2WD Traxxas Slash Truck. I printed it with PETG slow and at .12 layer height to improve strength. I have installed and run this on my truck and it fits well and will hopefully hold up. Time will tell. I printed it with the "arm" flat and used support from the bed. I am printing another with full supports but i suspect it will make the small holes hard to clean up. I had to clean up the inside of both side of the hole where the bearing insert. I used an endmill cutter for this but careful work with a dowel and sandpaper would also work.