I have a Protools, air over hyd, and unlike the previous poster, mine has worked flawlessly over the past several years, not one complaint! I have used it in my Street rod business for years and always worked perfect, that being said, I have a buddy who has a mittler brothers bender that has the center turn drive setup (as opposed to the pull the tube around the die type), and it is just the coolest thing, might look into MB, I have several MB products, and never an issue, hope this helps