When putting a displate on a wall, the corners can scratch things up and leave marks, or cause other issues on the wall… These corner protectors can glue or attach to the displate with a 3m strip to stop the scratching. 

There are 2 versions, the 1mm works well with the magnet and doesn't cause distancing issues, the 2mm is untested but included anyway. 

I Recommend using TPU, I'm sure PLA or others would also work but it has not been tested.

Printed with Creality TPU on an A1-Mini.