This is an enclosure for an RC differential from WLtoys widely found on AliExpress. It also includes the lateral attachments to mount the rear suspension arms.

There are holes on the bottom part made for M3 inserts so it can be bolted on the chassis. The bottom part also includes the holes for the M2 inserts used for closing the box.

On the top part there are places to put M3 inserts I used for the suspension rocker arms.

I hope the photos I published are explanatory enough. Feel free to ask questions if you have any.

Have fun printing ;)