Socket for 10mm 360 front / rear robot wheel

This is for use on small robots that need a 360 degree front or rear wheel. I accepts either a 10mm marble or 10mm steel bearing. Make sure to clean up any bridges that may print across gaps and make sure socket is clear of anything protruding inward. 10mm ball will snap into holder. It is not to be used for anything that has any significant weight to it and is only for small light projects.