If you are unsure of your oil filter size, or need to change the oil filter on different vehicles and only want one oil filter tool, the 3-Jaw Oil Filter Wrench is the right tool for the job. The universal design of the metal jaws will fit oil filters between 2" and 4-1/2". The heat-treated steel construction improves durability. The compact size combined with the ability to use either a 1/2" or 3/8" ratchet make oil changes convenient for mechanics at any skill level.