OTC's 3-prong self-adjusting oil filter wrench features 3 arms that adjust to fit a wide range of filter sizes, making this a very flexible tool for the workplace or home shop. Knurled legs provide extra gripping power. Rotation of the tool adjusts the the legs tightly against the filter. Fits filters ranging from 2-1/2 inches to 5-1/4 inches (65 mm to 135 mm) in diameter. To turn the tool use a 1/2 inch drive ratchet in the ratchet drive or a 13/16 inch wrench or socket on the nut. Durable plated finish. Value is at the core of the OTC tool and equipment portfolio. For a simple repair or the most complex drivability concern, these award-winning tools universally solve problems faster, and at better value, than any other product line available. Whether it’s a specialty tool or unique piece of service equipment, OTC provides top solutions to modern automotive service challenges while increasing technicians’ productivity and shop profits.