Adjustable Oil Filter Wrench: This adjustable oil filter wrench is designed to remove filters without damaging the filter housing. Special Serrated Design: Special serrated design to firmly clamp the filter, makes it not easy to fall off. Operating Range: 60-80mm, can be used with a 1/2" ratchet wrench or a wrench with a 22mm opening. Easy to Adjust: The extended spring is installed in the wrench, allows the movable rod to be adjusted easily. Meticulous Sanding: Meticulous sanding makes the texture smoother, provides a comfortable operating feeling.