8mm Bearing

8mm Linear shaft bearing.
One of the bearings on my printer was completely goosed, so I decided to try and print a new one!
To be totally honest, I was surprised at how well it worked, all I added to the print was a squirt of silicone spray.
the dimensions are: M4 bolt holes, 18mm apart in length, and 24mm width
Bearing body is 30mm length, 34 in width, and 22mm height.
I printed in PETG, but I would be interested in other people's experiences with more optimised low friction materials.