I have it too and LOVE it. I use the small one most of the time.
Originally Posted by
joe'smom
I use the Martelli gripper ring, which I believe is the same type of thing. It's wonderful; it really grips, allowing my hands to stay relaxed on the two knobs. I would not be able to machine quilt without it. I couldn't say how the halo compares to the Martelli.