We've tried almost every different oil filter wrench configuration available; adjustable-band models are a good idea but require side clearance. We have tested on four different vehicles, each with unique and challenging filter placements. One required a LONG reach through a fender-wall flap and another in an unbelieveably 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--easy enough to take out the oil filter without a sweat. Solid hardened-steel construction and finished with a black-oxide to prevent corrosion; we guarantee this product with a lifetime warranty.