Delta printers can be a bit flimsy. Movement of the hot end can setup vibration with varying amplitude and frequency causing artifacts in your prints. These brackets are my way of bringing rigidity to my Kossel Delta. I don't use auto bed leveling. I recently moved to a new house. I packed my delta by laying it down in the back seat and driving it to the new house loft. After 32 stairs a car ride and moving it about 8 times in the house the first print was perfect. The angle iron and these brackets maintained the precision of the bed through all of that. I must admit I was surprised. I hope it works as well for you.