The Lisle Corporation 73-153mm Heavy Duty Three Jaw Filter Wrench with Adapter, No. 63890, features heat-treated arms and specially designed gripping jaws to grab stubborn filters. The removable adapter provides lower clearance in tight spots. The filter wrench can be used with a 3/8" or 1/2" square drive, or with a 21mm wrench or socket. The tool works on heavy duty applications with oil filters from 73 to 153mm.