Fits Filters from 2 1/2ins to 3 1/8ins. Removes all oil filters from 2 1/2ins to 3 1/8ins in diameter. This extra large range enables the 63600 wrench to fit most all import car filters plus the common 3ins domestic car filters. Steel jaws grip filter without slipping. Works in tight spots from the front of the filter using 3/8ins drive.