Cheap device, and it didn't break. But man, it was a whole afternoon of hard labor. The magnet was meaningless - the forces involved are way too strong for the magnet to help with anything meaningful. The device did not fit where it said we should use it, but we did manage to find a pulley we could get it around to get the old belt off, and another pulley we could get it around to get the new one one. Fair warning: it took two or three passes to get the new belt all the way seated in the grooves. Now, the fact that it was hours of back-breaking work was not the fault of this little device. I love my Mazda5, but it is foolishness for any manufacturer to fit a stretch belt instead of JUST PUTTING A STINKIN' TENSIONER PULLEY ON IT! But as long as you're stuck with changing a stretch belt, and you're willing to spend your time and knuckle skin to save the cost of hiring a mechanic, there's a good chance this thing will help you out.
Rating: [4 of 5 Stars!]