Does anyone have any experience with Speed Bleeder?

I did read about the issue you experienced from other sources, due the bleeder just doesn’t fit like the factory ones.

It is for my racebike, and I am trying to find a way to change/bleed the brake fluid fast at the track without fussing around too much. I was planning to get a mityvac bleeder, so I don’t need air. Have you have any experience with the mityvac bleeder?

Thanks.