We've tried almost every different oil filter wrench configuration available; adjustable-band models are a good idea but require side clearance. Sized 'cup' wrenches are effective but expensive and fit just one size filter. We were hopeful but skeptical when we found this wrench. We put it to the test on four different vehicles, each with unique and challenging filter placements (obviously designed by engineers who don't change their own oil!) One required a LONG reach through a fender-wall flap and another in an unbelievably cramped compact import. The filters ranged in size from 2-5/8" to 3-1/2" and at least one had been WAY over-tightened. This amazing wrench adapted flawlessly to each one--we removed and replaced filters in record time and didn't swear once. Solid hardened-steel construction and components with corrosion-resistant black-oxide finish.